bug bug /ˈbʌg/

noun

1. () General term for any insect or similar creeping or crawling invertebrate  ( bug )
   general term for any insect or similar creeping or crawling invertebrate
    I found a bug crawling on the kitchen floor and quickly swept it outside.
   I found a bug crawling on the kitchen floor and quickly swept it outside.
   
   
2. A minute life form (especially a disease-causing bacterium); the term is not in technical use  ( bug , germ , microbe )
   a minute life form (especially a disease-causing bacterium); the term is not in technical use
   
3. Insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis  ( bug , hemipteran , hemipteron , hemipterous insect )
   insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis
   
   
4. A small hidden microphone; for listening secretly  ( bug )
   a small hidden microphone; for listening secretly
   
5. A fault or defect in a computer program, system, or machine  ( bug , glitch )
   a fault or defect in a computer program, system, or machine
   

verb

1. () Annoy persistently  ( beleaguer , bug , badger , pester , tease )
   annoy persistently
    The children teased the boy because of his stammer
   The children teased the boy because of his stammer
   
2. Tap a telephone or telegraph wire to get information  ( bug , intercept , wiretap , tap )
   tap a telephone or telegraph wire to get information
    The FBI was tapping the phone line of the suspected spy
   The FBI was tapping the phone line of the suspected spy
    Is this hotel room bugged?
   Is this hotel room bugged?