(1):

(n.) The red-headed woodpecker. See Woodpecker.

(2):

(n.) A kind of milkweed (Asclepias Curassavica) with red flowers. It is used in medicine.

(3):

(n.) A person having red hair.

(4):

(n.) 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.