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
His wrath has torn me and has been against me; he gnashed upon me with his teeth; my enemy sharpened his eyes upon me.
Resh The wicked shall see it and be furious; Schin he shall gnash with his teeth and waste away: Tau The desire of the wicked shall perish.
Pe All thine enemies opened their mouths regarding thee; they whistled and gnashed their teeth; they said, Swallow her up; certainly this is the day that we looked for; we have found it, we have seen it.
and wherever he takes him, he tears him, and he foams and gnashes with his teeth and pines away; and I spoke to thy disciples that they should cast him out, and they could not.
When they heard these things, they were divided in their hearts and gnashed on him with their teeth.