bug

(noun) general term for any insect or similar creeping or crawling invertebrate.

(noun) a fault or defect in a computer program, system, or machine. Synonyms: glitch.

(noun) a small hidden microphone; for listening secretly.

(noun) insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis. Synonyms: hemipterous insect, hemipteran, hemipteron.

(noun) a minute life form (especially a disease-causing bacterium); the term is not in technical use. Synonyms: microbe, germ.

(verb) annoy persistently. Synonyms: tease, badger, pester, beleaguer. Examples: "The children teased the boy because of his stammer."

(verb) tap a telephone or telegraph wire to get information. Synonyms: wiretap, tap, intercept. Examples: "The fbi was tapping the phone line of the suspected spy." "Is this hotel room bugged?."