A person who upsets the status quo by posing novel or upsetting questions, or attempts to stimulate innovation by being an irritant.
Synonym of gadabout (“a person who restlessly moves from place to place, seeking amusement or the companionship of others”)
Any dipterous (“two-winged”) insect or fly of the family Oestridae (commonly known as a botfly) or Tabanidae (horsefly), noted for irritating animals by buzzing about them, and biting them to suck their blood; a gadbee.
A person or thing that irritates or instigates.
A person who takes without giving back; a bloodsucker.
A person who complains or protests noisily.
An informant; a stool pigeon.
A loudspeaker used for frequencies intermediate between those of a woofer and a tweeter.
Something that squawks.
The radio used in police vehicles to keep in contact with headquarters.