Fiersn

根据古英语词典：

fyrsn, e;

FIERSN

f. The heel; calx :-- Ðú scealt fiersna sǽtan thou [the serpent] shall lie in wait for her [Eve's] heels, Cd. 43; Th. 56, 17; Gen. 913. [Ger. ferse, f: M. H. Ger. vërsen, f: O. H. Ger. fërsana, fërsina, fërsna, f: Goth. fairzna, f: Grk. GREEK , f. the heel: Sansk. pārshni, m. f. the heel.] fiersn