Eyas (?), n. [F.niais fresh from the nest, a derivative fr. L. nidus nest. E. an eyas for a nias. See Nest, and cf. Nias, Jashawk.] (Zoöl.) A nesting or unfledged bird; in falconry, a young hawk from the nest, not able to prey for itself. Shak J. H. Walsh
[1913 Webster]