gnash

Strong’s Dictionary of Greek Words:

Number:
5149 (find all occurrences in KJV Bible)
Greek:
τρίζω
Transliteration:
trizo
Phonic:
trid’-zo
Meaning:
apparently a primary verb; to creak (squeak), i.e. (by analogy) to grate the teeth (in frenzy)
KJV Usage:
gnash