Definitions For Bug

noun

• A minute life form (especially a disease-causing bacterium); the term is not in technical use
• General term for any insect or similar creeping or crawling invertebrate
• Insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis
• A small hidden microphone; for listening secretly
• A fault or defect in a computer program, system, or machine

verb

• Annoy persistently
• Tap a telephone or telegraph wire to get information