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Definition of BUG

4 definitions found:



Bug \Bug\ (b[u^]g), n. [OE. bugge, fr. W. bwg, bwgan, hobgoblin, scarecrow, bugbear. Cf. {Bogey}, {Boggle}.]
     1. A bugbear; anything which terrifies. [Obs.] [1913 Webster]

              Sir, spare your threats:
              The bug which you would fright me with I seek.
                                                    --Shak. [1913 Webster]

     2. (Zool.) A general name applied to various insects belonging to the Hemiptera; as, the squash bug; the chinch bug, etc. [1913 Webster]

     3. (Zool.) An insect of the genus {Cimex}, especially the bedbug ({Cimex lectularius}). See {Bedbug}. [1913 Webster]

     4. (Zool.) One of various species of Coleoptera; as, the ladybug; potato bug, etc.; loosely, any beetle. [1913 Webster]

     5. (Zool.) One of certain kinds of Crustacea; as, the sow bug; pill bug; bait bug; salve bug, etc. [1913 Webster]

     Note: According to popular usage in England and among housekeepers in America around 1900, bug, when not joined with some qualifying word, was used specifically for {bedbug}. As a general term it is now used very loosely in America as a colloquial term to mean any small crawling thing, such as an insect or arachnid, and was formerly used still more loosely in England.
           "God's rare workmanship in the ant, the poorest bug that creeps." --Rogers (--Naaman). "This bug with gilded wings." --Pope. [1913 Webster +PJC]

     6. (Computers) An error in the coding of a computer program, especially one causing the program to malfunction or fail. See, for example, {year 2000 bug}. "That's not a bug, it's a feature!" [PJC]

     7. Any unexpected defect or flaw, such as in a machine or a plan. [PJC]

     8. A hidden electronic listening device, used to hear or record conversations surreptitiously. [PJC]

     9. An infectious microorganism; a germ[4]. [Colloq.] [PJC]

     10. An undiagnosed illness, usually mild, believed to be caused by an infectious organism. [Colloq.]

     Note: In some communities in the 1990's, the incidence of AIDS is high and AIDS is referred to colloquially as
           "the bug".
           [PJC]

     11. An enthusiast; -- used mostly in combination, as a camera bug. [Colloq.] [PJC]

     {Bait bug}. See under {Bait}.

     {Bug word}, swaggering or threatening language. [Obs.]
        --Beau. & Fl.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48 [gcide]

Bug \Bug\ (b[u^]g), v. t.
     to {annoy}; to bother or pester.
     [PJC] Bugaboo

The Collaborative International Dictionary of English v.0.48 [gcide]

bug
   n.

      An unwanted and unintended property of a program or piece of hardware, esp. one that causes it to malfunction. Antonym of {feature}. Examples: ?There's a bug in the editor: it writes things out backwards.? ?The system crashed because of a hardware bug.? ?Fred is a winner, but he has a few bugs? (i.e., Fred is a good guy, but he has a few personality problems).

      Historical note: Admiral Grace Hopper (an early computing pioneer better known for inventing {COBOL}) liked to tell a story in which a technician solved a {glitch} in the Harvard Mark II machine by pulling an actual insect out from between the contacts of one of its relays, and she subsequently promulgated {bug} in its hackish sense as a joke about the incident (though, as she was careful to admit, she was not there when it happened). For many years the logbook associated with the incident and the actual bug in question (a moth) sat in a display case at the Naval Surface Warfare Center (NSWC). The entire story, with a picture of the logbook and the moth taped into it, is recorded in the Annals of the History of Computing, Vol. 3, No. 3 (July 1981), pp. 285--286.

      The text of the log entry (from September 9, 1947), reads ?1545 Relay #70 Panel F (moth) in relay. First actual case of bug being found?. This wording establishes that the term was already in use at the time in its current specific sense ? and Hopper herself reports that the term bug was regularly applied to problems in radar electronics during WWII.

      [bugpic-col]

      The ?original bug? (the caption date is incorrect)

      Indeed, the use of bug to mean an industrial defect was already established in Thomas Edison's time, and a more specific and rather modern use can be found in an electrical handbook from 1896 (Hawkin's New Catechism of Electricity, Theo. Audel & Co.) which says: ?The term ?bug? is used to a limited extent to designate any fault or trouble in the connections or working of electric apparatus.? It further notes that the term is ?said to have originated in quadruplex telegraphy and have been transferred to all electric apparatus.?

      The latter observation may explain a common folk etymology of the term; that it came from telephone company usage, in which ?bugs in a telephone cable? were blamed for noisy lines. Though this derivation seems to be mistaken, it may well be a distorted memory of a joke first current among telegraph operators more than a century ago!

      Or perhaps not a joke. Historians of the field inform us that the term
      ?bug? was regularly used in the early days of telegraphy to refer to a variety of semi-automatic telegraphy keyers that would send a string of dots if you held them down. In fact, the Vibroplex keyers (which were among the most common of this type) even had a graphic of a beetle on them (and still do)! While the ability to send repeated dots automatically was very useful for professional morse code operators, these were also significantly trickier to use than the older manual keyers, and it could take some practice to ensure one didn't introduce extraneous dots into the code by holding the key down a fraction too long. In the hands of an inexperienced operator, a Vibroplex ?bug? on the line could mean that a lot of garbled Morse would soon be coming your way.

      Further, the term ?bug? has long been used among radio technicians to describe a device that converts electromagnetic field variations into acoustic signals. It is used to trace radio interference and look for dangerous radio emissions. Radio community usage derives from the roach-like shape of the first versions used by 19th century physicists. The first versions consisted of a coil of wire (roach body), with the two wire ends sticking out and bent back to nearly touch forming a spark gap (roach antennae). The bug is to the radio technician what the stethoscope is to the stereotypical medical doctor. This sense is almost certainly ancestral to modern use of ?bug? for a covert monitoring device, but may also have contributed to the use of ?bug? for the effects of radio interference itself.

      Actually, use of bug in the general sense of a disruptive event goes back to Shakespeare! (Henry VI, part III - Act V, Scene II: King Edward: ?So, lie thou there. Die thou; and die our fear; For Warwick was a bug that fear'd us all.?) In the first edition of Samuel Johnson's dictionary one meaning of bug is ?A frightful object; a walking spectre?; this is traced to ?bugbear?, a Welsh term for a variety of mythological monster which (to complete the circle) has recently been reintroduced into the popular lexicon through fantasy role-playing games.

      In any case, in jargon the word almost never refers to insects. Here is a plausible conversation that never actually happened: ?There is a bug in this ant farm!? ?What do you mean? I don't see any ants in it.? ?That's the bug.?

      A careful discussion of the etymological issues can be found in a paper by Fred R. Shapiro, 1987, ?Entomology of the Computer Bug: History and Folklore?, American Speech 62(4):376-378.

      [There has been a widespread myth that the original bug was moved to the Smithsonian, and an earlier version of this entry so asserted. A correspondent who thought to check discovered that the bug was not there. While investigating this in late 1990, your editor discovered that the NSWC still had the bug, but had unsuccessfully tried to get the Smithsonian to accept it ? and that the present curator of their History of American Technology Museum didn't know this and agreed that it would make a worthwhile exhibit. It was moved to the Smithsonian in mid-1991, but due to space and money constraints was not actually exhibited for years afterwards. Thus, the process of investigating the original-computer-bug bug fixed it in an entirely unexpected way, by making the myth true! ?ESR]

      [73-07-29]

      It helps to remember that this dates from 1973.


The Jargon File (version 4.4.7, 29 Dec 2003) [jargon]

381 Moby Thesaurus words for "bug":
     ALGOL, COBOL, FORTRAN, Mumbo Jumbo, abrade, addict, addle, addle the wits, adenovirus, aerobe, aerobic bacteria, aficionado, aggravate, agitate, alphabetic data, alphanumeric code, amoeba, anaerobe, anaerobic bacteria, angular data, annoy, apply pressure, arachnid, arthropod, assembler, attend, attend to, auscultate, bacillus, bacteria, bacterium, badger, bag, bait, ball up, balloon, be all ears, be at, becloud, bedazzle, bedevil, beetle, befuddle, belly, belly out, bend an ear, beset, besiege, bewilder, bigot, bilge, billow, binary digit, binary scale, binary system, bit, blandish, blemish, bogey, bogeyman, boggart, bogle, booger, boogerman, boogeyman, bother, bouge, bristle, brown off, buff, bugaboo, bugbear, bugger, bulge, bullyrag, burn up, buttonhole, byte, cajole, carp at, case, catch, caterpillar, centipede, chafe, chilopod, chivy, cloud, coax, coccus, cock the ears, collector, command pulses, commands, compiler, computer code, computer language, computer program, confuse, control signals, controlled quantity, convulse, correcting signals, crack, crank, craze, crazy fancy, daddy longlegs, data, daze, dazzle, defect, defection, deficiency, demon, devil, devotee, dilate, diplopod, discombobulate, discomfit, discompose, disconcert, disease-producing microorganism, disorganize, disorient, distemper, distend, distract, disturb, dog, drawback, dun, eager beaver, eavesdrop, echovirus, embarrass, embroil, energumen, entangle, enterovirus, enthusiasm, enthusiast, error, error signals, examine by ear, exasperate, exercise, exert pressure, faddist, failing, failure, fan, fanatic, fanatico, fascination, fash, fault, faute, fee-faw-fum, feedback pulses, feedback signals, fiend, film data, filterable virus, flaw, flummox, flurry, fluster, flutter, fly, fog, foible, frailty, freak, fret, fret at, fuddle, fungus, furor, furore, fuss, fuss at, gall, germ, get, give attention, give audience to, give ear, goggle, gram-negative bacteria, gram-positive bacteria, great one for, gripe, harass, hark, harry, harvestman, hassle, hear, hear out, hearken, heckle, hector, heed, henpeck, hexadecimal system, hexapod, hobbyist, hole, hound, imperfection, importune, inadequacy, infatuate, infatuation, infirmity, information, input data, input quantity, insect, instructions, intercept, irk, kink, larva, lend an ear, listen, listen at, listen in, listen to, little problem, lunatic fringe, machine language, maggot, make a reconnaissance, mania, maniac, manic-depressive psychosis, maze, message, microbe, microorganism, microphone, miff, mike, millepede, millipede, mist, mite, mix up, moider, mold, molest, monomaniac, muddle, multiple messages, nag, nag at, needle, nettle, nibble at, noise, nonfilterable virus, nudzh, numeric data, nut, nymph, octal system, oscillograph data, output data, output quantity, passion, pathogen, peck at, peep, peeve, perplex, persecute, perturb, pester, pick at, pick on, picornavirus, pique, plague, play, play the spy, pluck the beard, ply, polar data, pooch, pop, pother, pouch, pout, press, pressure, problem, protozoa, protozoon, provoke, psych, punch-card data, pursuer, push, put out, put under surveillance, radiomicrophone, rage, raise hell, random data, rattle, reconnoiter, rectangular data, reference quantity, reovirus, rhapsodist, rhinovirus, rickettsia, ride, rift, rile, roil, round out, ruffle, ruly English, scorpion, scout, scout out, shortcoming, signals, single messages, sit in on, snag, something missing, spider, spirillum, spirochete, spook, spore, spy, spy out, stake out, staphylococcus, streptococcus, sucker for, swell, swell out, taint, tap, tarantula, tease, throw, throw into confusion, tick, torment, trouble, try the patience, trypanosome, tweak the nose, unorganized data, unsettle, upset, urge, vex, vibrio, virus, visible-speech data, visionary, vulnerable place, watch, weak link, weak point, weakness, wheedle, wiretap, work on, worry, yap at, zealot


Moby Thesaurus II by Grady Ward, 1.0 [moby-thesaurus]


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