Extended Strong's Greek Lexicon (Abbott-Smith based)
to cut off
Usage: ἀπο-κόπτω [in LXX for קָצַץ, כָּרַת, etc. ;] to cut off: Mrk.9:43, 45, Jhn.18:10, 26 Act.27:32. Mid., to mutilate oneself, have oneself mutilated: Gal.5:12 (cf. Deu.23:1 LXX; and see Cremer, 751; MM, see word).† (AS)