σμήχω · smēchō — LSJ
wipe off, wash off
lengthd. form of σμάω, wipe off by help of soap or unguent (cf. σμῆμα, σμῆγμα), wash off, ἐκ κεφαλῆς δʼ ἔσμηχεν ἁλὸς χνόον Od. l.c.
2 clear off
clear off by help of lotions or salves, ἀχῶρας, λέπρας, Dsc. 1.33, 2.9, etc.
b purge away
purge away, φλέγμα Aret. CA 1.10.
II soap, wash, with soap, unguent, wipe clean, wash, wash oneself, get oneself washed with soap, unguent, wiping her, clean
soap a person, wash him with soap or unguent, Hp. Acut. l.c.; wipe clean, Lyc. 876; ἀσπίδα Babr. 76.12: prov., Αἰθίοπα σ. ‘wash a blackamoor white’, Luc. Ind. 28, Zen. 1.46, Diogenian. 1.45:—Med. and Pass., wash oneself or get oneself washed with soap or unguent, Hp. Acut. l.c.; σμηξάσθω τὴν κεφαλήν Id. Steril. l.c., Superf. l.c.; σμηχομένα κρόταφον wiping her brow clean, AP 6.276 (Antip.); τοὺς ὀδόντας Str. 3.4.16; of hair, οὔρῳ κυνείῳ σμήχου Archig. ap. Gal. 12.443.