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. 2019
Examples from the Web for sound truck
Historical Examples of 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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012