'Teeth' in the Bible

And behold, another beast, a second one (the Medo-Persian Empire), was like a bear, and it was raised up on one side (domain), and three ribs were in its mouth between its teeth; and it was told, ‘Arise, devour much meat.’

After this I kept looking in the night visions, and behold, [I saw] a fourth beast (the Roman Empire), terrible and extremely strong; and it had huge iron teeth. It devoured and crushed and trampled down what was left with its feet. It was different from all the beasts that came before it, and it had ten horns (ten kings).

“Then I wished to know the exact meaning of the fourth beast, which was different from all the others, extremely dreadful, with teeth of iron and claws of bronze, which devoured, crushed and trampled down what was left with its feet,