γάλοως
From LSJ
αὔριον ὔμμε πάσας ἐγὼ λουσῶ Συβαρίτιδος ἔνδοθι λίμνας → tomorrow I'll wash you one and all in Sybaris lake
English (LSJ)
[ᾰ], ἡ, gen. γάλοω, dat. sg. and nom. pl.
A γαλόῳ Il.3.122, 22.473: Att. γάλως, gen. γάλω Hdn.Gr.2.236 (also gen. γάλωτος acc. to EM220.18):—husband's sister or brother's wife, sister-in-law, Il. 6.378, al. (Cf. Lat. glōs, Phryg. γέλαρος· ἀδελφοῦ γυνή, Hsch.)