'Gnasheth' in the Bible

He teareth me in his wrath, who hateth me: he gnasheth upon me with his teeth; mine enemy sharpeneth his eyes upon me.

The wicked plotteth against the just, and gnasheth upon him with his teeth.

The wicked seeth, and hath been angry, His teeth he gnasheth, and hath melted, The desire of the wicked doth perish!