The Collaborative International Dictionary of English v.0.48:
Gripe \Gripe\, n. [See Grype.] (Zool.) A vulture; the griffin. [Obs.] [1913 Webster] Like a white hind under the gripe's sharp claws. --Shak. [1913 Webster] Gripe's egg, an alchemist's vessel. [Obs.] --E. Jonson. [1913 Webster]