1) (Piel) to practice witchcraft or sorcery, use witchcraft

1a) sorcerer, sorceress (participle)

Root √כשׁף: כשׁף כֶּשֶׂף Arabic Syriac cut off, cut up to pray to cut oneself shredded 1 K 18:28 (√ of foll.; cf. Ar. Syr.(lit. prob.v.): so RS JPhil. xiv. 125, 126 Nö ZMG 1886, 723; acc. to RSis prop, herbs etc.into a magic brew).

כִּשֵּׁף vb denom Pi practice sorcery ...