napkin
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
P. and V. χειρόμακτρον, τό (Xen. and Soph., Fragment), Ar. ἡμιτύβιον, τό.