Căn'vas-băck, n.

noun

n. (Ornith.) A species of sea-duck, Fulgula valisneriana, highly esteemed for the delicacy of its flesh, found in the rivers of the Chesapeake Bay and adjoining waters, and deriving its name from the color of the plumage on its back. Baird.

An engraved illustration of a canvas-back duck standing on the ground. — Canvas-back.