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bug [ˈbʌg]

1 bug noun
  • a usually small insect —often used before another noun
  • a usually mild illness (such as a cold) that can be passed from one person to another
  • a problem that prevents a computer program or system from working properly

2 bug verb
  • to bother or annoy (someone)
  • to put a hidden microphone in (a room, telephone, etc.) in order to secretly hear what people are saying
  • to stick out more than is normal especially because of surprise or fear—usually + out