naw.

To bite off by little and little; to bite or scrape off with the fore teeth; to wear away by biting. The rats gnaw a board or plank; a worm gnaws the wood of a tree or the plank of a ship.

To eat by biting off small portions of food with the fore teeth.

To bite in agony or rage. They gnawed their tongues for pain. Revelation 16:10.

To waste; to fret; to corrode.

To pick with the teeth. His bones clean picked; his very bones they gnaw.

naw. To use the teeth in biting. I might well, like the spaniel, gnaw upon the chain that ties me.