Lexical Definition

‎τραχηλίζω‎ trachēlízō (trakh-ay-lid'-zo) to lay bare ^G:V
from ‎τράχηλος‎

opened.

• to seize by the throat or neck, i.e. to expose the gullet of a victim for killing (generally, to lay bare)

Abbott-Smith

† 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 (v. Westc., Rendall, on He, l.c.; DB, iii, 625n), τραχηλισμένα, laid open (RV, Westc.; downcast, Rendall): He 4:13.†

Abbott-Smith References

Liddell-Scott-Jones

τραχηλίζω-ίζω,

future Attic dialect -ιῶ[Refs 3rd c.BC+]:—bend or twist the neck of a victim, βοῦν [Refs 4th c.BC+]

__II in wrestling, 'scrag' one's opponent, τοὺς νεανίσκους [Refs 1st c.AD+]:— passive, [Refs 5th c.BC+]
__II.2 metaphorically, inflict hardship on a combatant, τοὺς.. φίλους οἱ λειπόμενοι τραχηλιοῦσι πόλεμοι [Refs 1st c.AD+]:—passive, ἐμφυλίῳ πολέμῳ καὶ διχονοίᾳ -ιζόμενοι [Refs 1st c.AD+]
__II.3 metaphorically in passive, to be overpowered, swept away, ταῖς ἐπιθυμίαις [Refs 1st c.AD+]; of ships in a whirlpool, [Refs 1st c.BC+]
__III in a pun on significations [Refs] see how the ram's neck is being twisted, [Refs 1st c.AD+]
__IV passive, to be laid open, [NT]; τετραχηλισμένα· πεφανερωμένα, [Refs 5th c.AD+]

_{LSJ Scripture Refs: Heb.4.13}