εὔκνημος
From LSJ
εἰ ἀποκρυπτόντων τῶν Μήδων τὸν ἥλιον ὑπὸ σκιῇ ἔσοιτο πρὸς αὐτοὺς ἡ μάχη καὶ οὐκ ἐν ἡλίῳ → if the Medes hid the sun, the battle would be to them in the shade and not in the sun
English (LSJ)
ον,
A with beautiful ankle, πούς AP5.202 (Asclep.); with handsome legs, of a statue, Plin.HN34.82; of men, Herm. ap. Stob. 1.49.45; with strong calves, UPZ121.6 (ii B.C.). II as Subst., a plant in Nic. Th.648, Al.372.