Quick definitions from WordNet (bug)
▸ noun: general term for any insect or similar creeping or crawling invertebrate
▸ noun: a small hidden microphone; for listening secretly
▸ noun: a fault or defect in a system or machine
▸ noun: a minute life form (especially a disease-causing bacterium); the term is not in technical use
▸ noun: insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis
▸ verb: tap a telephone or telegraph wire to get information ("Is this hotel room bugged?")
▸ verb: annoy persistently
▸ Also see bug
▸ noun: general term for any insect or similar creeping or crawling invertebrate
▸ noun: a small hidden microphone; for listening secretly
▸ noun: a fault or defect in a system or machine
▸ noun: a minute life form (especially a disease-causing bacterium); the term is not in technical use
▸ noun: insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis
▸ verb: tap a telephone or telegraph wire to get information ("Is this hotel room bugged?")
▸ verb: annoy persistently
▸ Also see bug