'Teeth' in the Bible

"The lioness may roar, and the lion cub may growl; but even the ivory teeth of the full grown lion are broken.

His anger tears me in his persistent resentment against me; he gnashes his teeth at me. My adversary glares at me.

I'm a pile of skin and bones; I have barely escaped by the skin of my teeth."

Who dares to open his mouth, since it is ringed with his terrible teeth!