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, A person with red hair, A tropical milkweed, Asclepias Curassavica, with umbels of bright-red flowe