|1.||assassin bug bedbug See also chinch bug any insect of the order Hemiptera, esp any of the suborder Heteroptera, having piercing and sucking mouthparts specialized as a beak (rostrum)|
|2.||chiefly (US), (Canadian) any insect, such as the June bug or the Croton bug|
|a. a microorganism, esp a bacterium, that produces disease|
|b. a disease, esp a stomach infection, caused by a microorganism|
|4.||informal an obsessive idea, hobby, etc; craze (esp in the phrases get the bug, be bitten by the bug, the bug bites, etc)|
|5.||informal a person having such a craze; enthusiast|
|6.||informal (often plural) an error or fault, as in a machine or system, esp in a computer or computer program|
|7.||informal a concealed microphone used for recording conversations, as in spying|
|8.||(US) (in poker) a joker used as an ace or wild card to complete a straight or flush|
|—vb , bugs, bugging, bugged|
|9.||(tr) to irritate; bother|
|10.||(tr) to conceal a microphone in (a room, etc)|
|11.||(US) (intr) (of eyes) to protrude|
|[C16: of uncertain origin; perhaps related to Old English budda beetle]|
|Bug (Russian buk)|
|1.||Also called: Southern Bug a river in E Europe, rising in W Ukraine and flowing southeast to the Dnieper estuary and the Black Sea. Length: 853 km (530 miles)|
|2.||Also called: Western Bug a river in E Europe, rising in SW Ukraine and flowing northwest to the River Vistula in Poland, forming part of the border between Poland and Ukraine. Length: 724 km (450 miles)|
A true bug, specifically one having a beaklike structure that allows piercing and sucking.
An insect or similar organism, such as a centipede or an earwig.
A disease-producing microorganism, such as a flu bug.
The illness or disease so produced.
A defect or difficulty, as in a system or design.
|bug (bŭg) Pronunciation Key
Our Living Language : The word bug is often used to refer to tiny creatures that crawl along, such as insects and even small animals that are not insects, such as spiders and millipedes. But for scientists the word has a much narrower meaning. In the strictest terms bugs are those insects that have mouthparts adapted for piercing and sucking. The mouthparts of these bugs are contained in a beak-shaped structure. Thus scientists would classify a louse but not a beetle or a cockroach as a bug. In fact, scientists often call lice and their relatives true bugs to distinguish them better from what everyone else calls "bugs."
A generic term that describes a malfunction of undetermined origin in a computer or other electronic device.
Note: The term originated in the 1940s when the examination of a large computer revealed that an actual insect had landed on one of the circuits, shorting it out and shutting the machine down.
Also, bugger off. Go away, as in Bug off before I call the police. Both terms are often used as an imperative, as in the example, and the variant is heard more in Britain than in America. [Slang; c. 1900] For a synonym, see buzz off.