Pie, n. [F. pie, L. pica; cf. picus woodpecker, pingere to paint; the bird being perhaps named from its colors. Cf. Pi, Paint, Speight.] 1. (Zoöl.) (a) A magpie. (b) Any other species of the genus Pica, and of several allied genera. [Written also pye.]
2. (R. C. Ch.) The service book.
3. (Pritn.) Type confusedly mixed. See Pi.
By cock and pie, an adjuration equivalent to “by God and the service book.” Shak. — Tree pie(Zoöl.), any Asiatic bird of the genus Dendrocitta, allied to the magpie. — Wood pie. (Zoöl.) See French pie, under French.