- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples 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
- US and Canadian a motor vehicle carrying a public address systemalso called (in Britain and certain other countries) loudspeaker van