Reference: Gnash
Easton
Heb harak, meaning "to grate the teeth", (Job 16:9; Ps 112:10; La 2:16), denotes rage or sorrow. (See also Ac 7:54; Mr 9:18.)
See Verses Found in Dictionary
He teareth me in his wrath, who hateth me: he gnasheth upon me with his teeth; my enemy sharpeneth his eyes upon me.
The wicked shall see it, and be grieved; he shall gnash with his teeth, and melt away: the desire of the wicked shall perish.
All thy enemies have opened their mouth against thee: they hiss and gnash the teeth: they say, We have swallowed her up: certainly this is the day that we looked for; we have found, we have seen it.
And wherever he taketh him, he teareth him; and he foameth and gnasheth with his teeth, and pineth away; and I spoke to thy disciples that they should cast him out, and they could not.
When they heard these things, they were cut to the heart, and they gnashed on him with their teeth.