Strong's Concordance
Original word: τρίζω
Transliteration: trizó
Definition (short): grinds
Definition (full): to cry, chirp, to grind the teeth
NAS Exhaustive Concordance
Word Origin: from a root trig-
Definition: to cry, chirp, to grind the teeth
NASB Translation: grinds (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
Copyright © 1981, 1998 by The Lockman Foundation.
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Copyright © 1981, 1998 by The Lockman Foundation.
All rights reserved Lockman.org
Strong's Exhaustive Concordance
Apparently a primary verb; to creak (squeak), i.e. (by analogy) to grate the teeth (in frenzy) -- gnash.
References
KJV:
And wheresoever he taketh him, he teareth him: and he foameth, and gnasheth with his teeth, and pineth away: and I spake to thy disciples that they should cast him out; and they could not.
NASB:
and whenever it seizes him, it slams him to the ground and he foams at the mouth, and grinds his teeth and stiffens out. I told Your disciples to cast it out, and they could not do it."