Definition of derby noun from the Oxford Advanced American Dictionary

     

    derby

     noun
    noun
    NAmE//ˈdərbi//
     
    (pl. derbies)
     
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  1. 1 Derby used in the name of several horse races which happen every year the Kentucky Derby
  2. 2 a race or sports competition a motorcycle derby see also demolition derby
  3. 3(also bowler, ˌbowler ˈhat) a hard black hat with a curved brim and round top, worn in the past