τραχηλίζω (< τράχηλος), prop., of wrestlers, to take by the throat, hence (Philo), to prostrate, overthrow. Metaph., but in what sense and from what age it is doubtful (see Westc., Rendall, on He, l.with; DB, iii, 625n), τραχηλισμένα, laid open (RV, Westc.; downcast, Rendall): Heb.4:13.† (AS)
Thayer:
1) to seize and twist the neck or throat 1a) of combatants who handle thus their antagonist 2) to bend back the neck of a victim to be slain, to lay bare or expose by bending back 3) to lay bare, uncover, expose 4) laid bare, laid open, made manifest to one
τραχηλίζω
trachēlizō
trakh-ay-lid'-zo
From G5137; to seize by thethroat or neck, that is, to expose the gullet of a victim for killing (generally to laybare)