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.)
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I am broken by his wrath, and his hate has gone after me; he has made his teeth sharp against me: my haters are looking on me with cruel eyes;
The sinner will see it with grief; he will be wasted away with envy; the desire of the evil-doers will come to nothing.
All your haters are opening their mouths wide against you; making hisses and whistling through their teeth, they say, We have made a meal of her: certainly this is the day we have been looking for; it has come, we have seen it.
And wherever it takes him, it puts him down violently, streaming at the lips and twisted with pain; and his strength goes from him; and I made a request to your disciples to send it out, and they were not able.
Hearing these things, they were cut to the heart and moved with wrath against him.