'Teeth' in the Bible

Behold, another animal, a second, like a bear; and it was raised up on one side, and three ribs were in its mouth between its teeth: and they said thus to it, Arise, devour much flesh.

After this I saw in the night visions, and, behold, a fourth animal, awesome and powerful, and strong exceedingly; and it had great iron teeth; it devoured and broke in pieces, and stamped the residue with its feet: and it was diverse from all the animals that were before it; and it had ten horns.

Then I desired to know the truth concerning the fourth animal, which was diverse from all of them, exceedingly terrible, whose teeth were of iron, and its nails of brass; which devoured, broke in pieces, and stamped the residue with its feet;