| 1. | a race for three-year-old horses that is run annually at Epsom Downs, near London, England: first run in 1780. |
| 2. | any of certain other important annual horse races, usually for three-year-old horses, esp. the Kentucky Derby. |
| 3. | (lowercase ) a race or contest, usually one open to all who wish to enter and offering a prize for the winner. |
| 4. | (lowercase ) any endeavor or venture regarded as a competition: to win the gubernatorial derby. |
| 5. | (lowercase ) Also called bowler. a stiff felt hat with rounded crown and narrow brim, worn chiefly by men. |
