Chough \Chough\, n. [OE. choughe, kowe (and cf. OE. ca), fr. AS. ce['o]; cf. also D. kauw, OHG. ch[=a]ha; perh. akin to E. caw. [root]22. Cf. Caddow.]

(Zo["o]l.) A bird of the Crow family (Fregilus graculus) of Europe. It is of a black color, with a long, slender, curved bill and red legs; -- also called chauk, chauk-daw, chocard, Cornish chough, red-legged crow. The name is also applied to several allied birds, as the Alpine chough.

Cornish chough (Her.), a bird represented black, with red feet, and beak; -- called also aylet and sea swallow.

Source: Webster's Revised Unabridged Dictionary (1913)