der ‧ by /ˈdɑːbi $ ˈdɜːrbi/ BrE AmE noun ( plural derbies ) [countable]
[ Date: 1800-1900 ]
[ Sense 1-2, 4: Origin: Derby , important horse race held at Epsom, England, from Lord Derby (1752-1834) who started it. ]
[ Sense 3: Origin: From the wearing of such hats at the Derby ]
1 . Derby used in the names of some well-known horse races:
the Kentucky Derby
the Derby British English (=a famous race in England)
2 . British English a sports match between two teams from the same area or city
3 . especially American English a man’s hard round hat that is usually black SYN bowler British English
4 . a particular type of race or competition:
a donkey derby