Redhead
Redhead (-h?d`) , noun
1.
A person having red hair.
2.
(a) (Zoology) 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.
(b)
(Zoology) The red-headed woodpecker. See Woodpecker.
3.
(Botany) A kind of milkweed (Asclepias Curassavica) with red flowers. It is used in medicine.