Strong's #2786: charaq (pronounced khaw-rak')
a primitive root; to grate the teeth:--gnash.
Brown-Driver-Briggs Hebrew Lexicon:
châraq
1) (Qal) to gnash, grind (the teeth)
Part of Speech: verb
Relation: a primitive root
Usage:
This word is used 5 times:
Job 16:9: "He teareth me in his wrath, who hateth me: he gnasheth upon me with his teeth; mine enemy sharpeneth"
Psalms 35:16: "With hypocritical mockers in feasts, they gnashed upon me with their teeth."
Psalms 37:12: "The wicked plotteth against the just, and gnasheth upon him with his teeth."
Psalms 112:10: "The wicked shall see it, and be grieved; he shall gnash with his teeth, and melt away: the desire of the wicked"
Lamentations 2:16: "against thee: they hiss and gnash the teeth: they say, We have swallowed her up: certainly"