Webster's Revised Unabridged Dictionary · 1913

Eyas

Eyas , noun

[French niais fresh from the nest, a derivative from Latin nidus nest. English an eyas for a nias. See Nest, and compare Nias, Jashawk.]

(Zoology) A nesting or unfledged bird; in falconry, a young hawk from the nest, not able to prey for itself. — Shak J. H. Walsh

Eyas , adjective

Unfledged, or newly fledged. [Obsolete]
Like eyas hawk up mounts unto the skies, His newly budded pinions to assay. — Spebser