πέτηλος

η, ον
A. outspread, stretched, ἐπὶ σκελέεσσι πέτηλον (acc. to others flying) Arat. 271.
II. full-grown, μόσχοι Ath. 9.376b (expld. ἀπὸ τῶν κεράτων ὅταν αὐτὰ ἐκπέταλα ἔχωσι), cf. Hsch. s.v. βοῦς π. (‐ηνός cod.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project