ˈbəzə(r) noun
( -s )
1. : one that buzzes: as
a. : the interrupter of an induction coil
b. : an electric signal device producing a buzzing sound
c. : a miniature spark generator of which the principal element is a small vibrator actuated by an electromagnet
2. Britain : a textile burrer
3. slang : a detective's or policeman's badge