Canvasback
Pronunciation : Can"vas*back`
Part of Speech : n.
Definition : Defn: A Species of duck (Aythya vallisneria), esteemed for the delicacy of its flesh. It visits the United States in autumn; particularly Chesapeake Bay and adjoining waters; -- so named from the markings of the plumage on its back.
(Zo?l.)
Source : Webster's Unabridged Dictionary, 1913