1. tooth, fang, and claw - Noun
2. tooth, fang, and claw - Adverb
tooth, fang, and claw
(figuratively) Viciously; with all one's strength or power; without holding back.
to fight tooth, fang, and claw for something
tooth, fang, and claw
(figuratively, rare) The means of wild predators to kill.
He was killed by coyotes; he died by tooth, fang, and claw.