Ἀρέθουσα
From LSJ
ἔνδον γὰρ ἁνὴρ ἄρτι τυγχάνει, κάρα στάζων ἱδρῶτι καὶ χέρας ξιφοκτόνους → yes, the man is now inside, his face and hands that have slaughtered with the sword dripping with sweat
English (LSJ)
[ᾰρ], ἡ, name of several fountains, e.g. in Ithaca, Od. 13.408; at Syracuse, Str.6.2.4: pl.,
A κρῆναι ἀρέθουσαι Choeril.2:— Adj. Ἀρεθούσιος, α, ον, ὅδωρ AP9.362.18. (A participial form; ἀρέθω is cited by Hdn.Gr.1.440 without expl.)