ἐκτρᾰχηλ-ίζω · ektrachēl-izō — LSJ
throw the rider over its head, X. Cyr. 1.4.8, Plu. Adul. 2.58f: generally, break a personʼs neck, Ar. Lys. 705; overturn, τὰ ὄρη Tab.Defix.Aud. 271.26 (Hadrumetum, iii A.D.); κλίμακας Ph. Bel. 85.38:—Pass., break oneʼs neck, Ar. Nu. 1501, Pl. 70, Luc. Merc.Cond. 42.
metaph., ruin, pervert, D. 9.51, Luc. Rh.Pr. 10, Alciphr. 3.40, Porph. Abst. 1.42; εἰς ὑπερηφανίαν Mich. in EN 523.20:—Pass., εἰς ἀτόπους πράξεις Ph. Fr. 102 H.
metaph., cause to lose control of oneʼs language, ἐ. τινὰς αἱ τραγῳδίαι Hermog. Id. 1.6.
behead, Gloss.