Strong's #5149: trizo (pronounced trid'-zo)
apparently a primary verb; to creak (squeak), i.e. (by analogy) to grate the teeth (in frenzy):--gnash.
Thayer's Greek Lexicon:
́
trizo
1) to squeak, make a shrill cry
2) to gnash or grind one' s teeth
Part of Speech: verb
Relation: apparently a primary verb
Usage:
This word is used 1 times:
Mark 9:18: "him: and he foameth, and gnasheth with his teeth, and"