κατακνίζω · kataknizō — LSJ
chop up, mince
chop up, mince, τι εἰς λεπτά Ath. 9.376d.
2 pick to pieces
metaph., pick to pieces, λόγους Isoc. 12.17; τὰ τοῦ Ὁμήρου κ. λεπτά Luc. Hes. 5.
II scratch, irritate, stimulate, to be prurient
scratch, irritate, stimulate the scalp, Asclep. ap. Gal. 12.420:—Pass., v.l. in Dsc. 2.123; to be prurient, ἐγὼ δὲ κατακέκνισμαι Ar. Pl. 973.
2 cut grooves in, score
cut grooves in, score, ξύλα καὶ λίθους τραχύνουσι -ζοντες Diocl. Fr. 26.
3 scarify, let blood from
scarify, let blood from, -κνίσω (prob. for -κνήσω) σου τὸν πόδα Luc. Ocyp. 91:—Pass., -κνισθεὶς τὸ σκέλος Orib. 7.20.8 (= Gal. 19.524, where -κνήσας).