WordReference Random House Learner's Dictionary of American English © 2017
race•horse /ˈreɪsˌhɔrs/USA pronunciation   n. [countable]
  1. a horse raised or kept for racing.

WordReference Random House Unabridged Dictionary of American English © 2017
race•horse  (rāshôrs′),USA pronunciation n. 
  1. a horse bred or kept for racing, esp. in flat races or steeplechases.
  • race1 + horse 1620–30

Collins Concise English Dictionary © HarperCollins Publishers::

racehorse /ˈreɪsˌhɔːs/ n
  1. a horse specially bred for racing

'racehorse' also found in these entries:

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