tusk (n)

Sadly, some people hunt elephants and remove their tusks to sell them.
The elephant used its powerful tusk to unearth roots and access buried water.
Poaching poses a significant threat to elephants, as their tusks are sought after for the illegal ivory trade.
The walrus uses its long tusk to create breathing holes in the ice during Arctic winters.
The distinctive tusk of a boar is a symbol of strength and can be used for defense.