LSJ
ἔλαφος brocket, two-year stag, Arist. HA 611b18; gen. ἀχαιΐνεω AP 6.165 (Phal.); — also fem. ἀχαΐνη Arist. HA 506a24; also ἀχαιΐνη deer, Babr. 95.87; poet. ἀχαιϊνέη A.R. 4.175, Opp. C. 2.426.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)