[τρίζω] apparently a primary verb; to creak (squeak), i.e. (by analogy) to grate the teeth (in frenzy)
Usages throughout the bible
Mark 9:18
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And wheresoever he taketh him, he teareth him: and he foameth, and gnasheth G5149 with his teeth, and pineth away: and I spake to thy disciples that they should cast him out; and they could not.
