'Gnashed' in the Bible

His anger hath torn, and he hateth me, He hath gnashed at me with his teeth, My adversary sharpeneth his eyes for me.

With hypocritical mockers in feasts, they gnashed upon me with their teeth.

(Pe) All your enemies gloated over you. They sneered and gnashed their teeth; they said, "We have destroyed her! Ha! We have waited a long time for this day. We have lived to see it!"