D defs.my
Entry 2 senses Webster, 1913

Derby

/(?; usually ? in Eng.; 85)/ · Der·by · IPA /ˈdäː.bi/
01 n. A race for three-old horses, run annually at Epsom (near London), for the Derby stakes. It was instituted by the 12th Earl of Derby, in 1780.
  1. 1.
    A race for three-old horses, run annually at Epsom (near London), for the Derby stakes. It was instituted by the 12th Earl of Derby, in 1780.
  2. 2.
    A stiff felt hat with a dome-shaped crown.
Phrases & compounds
Derby Day — the day of the annual race for the Derby stakes, -- Wednesday of the week before Whitsuntide.