a portable loudspeaker having a built-in amplifier and microphone
Also called (in Britain and certain other countries): loud-hailer
WordReference Random House Learner's Dictionary of American English © 2025
bull•horn or bull horn/ˈbʊlˌhɔrn/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2025- a high-powered, electrical loudspeaker:Talking through the bullhorn, the detective persuaded the gunman to surrender.
bull•horn
(bŏŏl′hôrn′),USA pronunciation n.
- a directional, high-powered, electrical loudspeaker or megaphone.
- bull1 + horn 1950–55
Collins Concise English Dictionary © HarperCollins Publishers::
'bullhorn' also found in these entries (note: many are not synonyms or translations):