Webster’s Revised Unabridged Dictionary · 1913
Dickey
Dick′ey, 1. A hat; esp., in U. S., a stiff hat or derby; in Eng., a straw hat. [Slang]
2. One of various animals; specif.: (a) A donkey. (b) Any small bird; — called also dickey bird. [Colloq.] (c) The hedge sparrow. [Dial. Eng.] (d) The haddock.
3. In a carriage: (a) A seat for the driver; — called also dickey box. (b) A seat at the back for servants.