D defs.my
Entry 3 senses Webster, 1913

Redhead

/(-h?d`)/ · Red·head · IPA /ˈɹɛdˌhɛd/
01 n. A person having red hair.
  1. 1.
    A person having red hair.
  2. 2.
    An American duck (Aythya Americana) highly esteemed as a game bird. It is closely allied to the canvasback, but is smaller and its head brighter red. Called also red-headed duck. American poachard, grayback, and fall duck. See Illust. under Poachard.(Zool.) Also: red-headed duck, American poachard, grayback, fall duck See: Poachard
  3. 3.
    A kind of milkweed (Asclepias Curassavica) with red flowers. It is used in medicine.(Bot.)