A fish-eating hawk (Pandion haliaetus) having plumage that is dark on the back and white below. Also called fish hawk.
A plume formerly used to trim women's hats.
[Middle English osprai, from Anglo-Norman ospreit, from Medieval Latin avis praedae, bird of prey : Latin avis, bird; see awi- in Indo-European roots + Latin praedae, genitive of praeda, booty, prey; see ghend- in Indo-European roots.]
fishing hawk, c.1460, from Anglo-Fr. ospriet, from M.L. avis prede "bird of prey," from L. avis praedæ, a generic term apparently confused with this specific bird in O.Fr. on its similarity to ossifrage.