Racehorse
(noun)
A horse bred and trained specifically for racing competitions.
Origin:
Derived from the middle english word "rasehors" meaning "fast horse".
Examples:
- The racehorse galloped around the track.
- The jockey rode the racehorse to victory.
- The racehorse was retired after a successful career.
- He spent his entire fortune on buying racehorses.
- He had a bet on the racehorse that he knew was going to win.