Bailly
v. πτέρνα.
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LSJ
(Hp. Art. 3, Epid. 5.48, Phot.), later πτέρνα (Lyc. 500, LXX Ge. 3.15, etc.), ἡ, heel, Il. 22.397, Hp. ll. cc., Arist. HA 494b7; under part of the heel, A. Ch. 209 (pl.); heel-bone, Gal. 2.776, al. ; prov., εἴπερ τὸν ἐγκέφαλον… μὴ ἐν ταῖς π. φορεῖτε D. 7.45.
hoof, LXX Jd. 5.22.
heel of a shoe, Herod. 7.21, Phryn. PS p. 69B.
footstep, LXX Ca. 1.8. metaph, foot or lower part of anything, πύργων Lyc. 442; τῆς μηχανῆς Plb. 8.6.2; of a mast, Asclep. Myrl. ap. Ath. 11.474f (but, waist of a ship, Hero Stereom. 2.52).
butt-end of the ἀγκών of a torsion-engine, Ph. Bel. 59.30, 66.2; of a surgical machine, Orib. 49.4.9, al.
ham (mock Epicism formed from Lat. perna), Batr. 37; f.l. for πέρνα in Aët. 15.15, Paul.Aeg. 7.17.74 (πέρνα correctly in 4.32).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)