racegoer means one who attends horse races or dog races. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From race + goer.
noun
- One who attends horse races or dog races.“On December 9, No. 4056, Princess Margaret, worked a racegoers' excursion from Stapleton Road, Bristol, to Newbury Racecourse, via Devizes.”