Dictionary entry

λευκαίνω

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

λευκαίνω

(< λευκός), [in LXX: Ps 50 (51):7, Is 1:18 (לבן hi.), etc.;]

to whiten, make white: c. acc. rei, Mk 9:3, Re 7:14.†