sound truck
noun
a truck carrying a loudspeaker from which speeches, music, etc., are broadcast, as for advertising, campaigning, or the like.
Origin of sound truck
First recorded in 1935–40
Words nearby sound truck
Example sentences from the Web for sound truck
A sound-truck in a city, competing with all the traffic noises, will turn no more than fifteen watts of electricity into noise.
Creatures of the Abyss |Murray Leinster
British Dictionary definitions for sound truck
sound truck
noun
US and Canadian
a motor vehicle carrying a public address system
also called (in Britain and certain other countries) loudspeaker van