Gier-eagle \Gier"-ea`gle\, n. [Cf. D. gier vulture, G. gier, and E. gyrfalcon.] (Zool.) A bird referred to in the Bible (--Lev. xi. 18and --Deut. xiv. 17) as unclean, probably the Egyptian vulture ({Neophron percnopterus}). [1913 Webster]