ψῑλ-ωσις · psil-ōsis — LSJ
stripping bare of flesh, of hair, shaving, of leaves
stripping bare of flesh, ὀστέου Hp. Aph. 7.19; of hair, Clearch. 9; ψ. τῆς κεφαλῆς shaving, Archig. ap. Gal. 8.150; of leaves, Plu. QConv. 2.646d; χρημάτων J. AJ 17.11.2.
II writing, pronouncing with the spiritus lenis, an unaspirated consonant
Gramm., writing or pronouncing with the spiritus lenis, or an unaspirated consonant, Eust. 515.37.