G0609
ἀποκόπτω
to cut off
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)
Full Thayer's lexicon entry
ἀποκόπτω — apokóptō
ἀποκόπτω: 1 aorist ἀπεκοψα; future middle ἀποκόψομαι; to cut off, amputate: Mar 9:43 (45); Joh 18:10; Joh 18:26; Act 27:32; ὄφελον καί ἀποκόψονται I would that they (who urge the necessity of circumcision would not only circumcise themselves, but) would even mutilate themselves (or cut off their privy parts), Gal 5:12. ἀποκόπτεσθαι occurs in this sense in Deu 23:1; (Philo de alleg. leg. 3:3; de vict. off. § 13; cf. de spec. legg. i. § 7); Epictetus diss. 2, 20, 19; Lucian, Eun. 8; (Dion Cass. 79, 11; Diodorus Siculus 3, 31), and other passages quoted by Wetstein (1752) at the passage (and Sophocles Lexicon under the word). Others incorrectly: I would that they would cut themselves off from the society of Christians, quit it altogether; (cf. Meyer and Lightfoot at the passage).
6 occurrences
Mark (2), John (2), Acts (1), Galatians (1)