one of an American breed of trotting and pacing horses used chiefly for harness racing.
Origin of Standardbred
pertaining to a horse of the Standardbred breed.
Origin of standard-bred
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a US and Canadian breed of trotting and pacing horse, used esp for harness-racing
Word Origin for standard-bred
C19: so called because they are bred to attain a prescribed standard of speed
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