tooth and nail

Adverb

error-lua-exec figuratively

(figuratively) Viciously; with all one's strength or power; without holding back.

Japanese Meaning

全力で戦う、容赦なく攻撃する / 力の限りに取り組む、必死に争う / 全力を尽くして闘う

They fought tooth and nail to protect the old oak tree.

彼らは古いオークの木を守るために死に物狂いで戦った。

Sense（1）

(figuratively) Viciously; with all one's strength or power; without holding back.

For a century, the two families fought tooth and nail over control of the land.