noun
plural bugs
[count] chiefly US informal :a usually small insect
[count] :a usually mild illness (such as a cold) that can be passed from one person to another
[count] :a problem that prevents a computer program or system from working properly
[count] :a small hidden microphone that is used to secretly listen to and record people :listening device
the bug informal :a sudden, strong interest in a particular activity
verb
bugs; bugged; bugging
[+ obj] informal :to bother or annoy (someone)
[+ obj] :to put a hidden microphone in (a room, telephone, etc.) in order to secretly hear what people are saying
[no obj] of the eyes :to stick out more than is normal especially because of surprise or fear - usually + out
bug off
[phrasal verb] US informal :to go away - used in speech as a rude or angry way to tell someone to leave you alone and to stop bothering you
bug out
[phrasal verb] US informal :to leave quickly