λεαίνω · leainō — LSJ
smooth, polish, of a worker in horn or stone, πᾶν δʼ εὖ λειήνας Il. 4.111, cf. IG ll.cc.; ἵπποισι κέλευθον πᾶσαν λειανέω I will smooth the way, Il. 15.261; λείηναν δὲ χορόν Od. 8.260, λ. τὰ τραχυνθέντα Pl. Ti. 66c; λ. τὰ κηρία, of bees, Arist. HA 625b19:—Pass., λεαινόμενοι τὰ σώματα Theopomp.Hist. 195.
triturate, pound in a mortar, Hdt. l.c.; grind down (of the teeth), X. Mem. 1.4.6, Arist. Ph. 198b26, HA 501b31, Nic. Th. 95, Ph. 1.63:—Med., grind small, Nic. Th. 646:— Pass., Philotim. ap. Orib. l.c.
generally, crush, extirpate, τὰ φυόμενα Hdt. 4.122.
smooth away, τὰς τῶν σκυτῶν ῥυτίδας Pl. Smp. 191a, cf. Plt. l.c. (Pass.): metaph., smooth or soften down, τὸν Μαρδονίον λόγον Hdt. 8.142; τὸ ἐπίχολον λ. τῷ ὕπνῳ Philostr. Im. 2.11; polish style, D.H. Comp. 16: metaph., also, λ. τὴν κατάποσιν tickle the palate, Muson. l.c.; τὴν ἀκοήν D.H. Comp. 12: abs., [ὁ χυλὸς] λεαίνει lubricates, soothes, Thphr. CP 6.2.1.
intr., to be smooth, Arist. Pr. 936a15.