Their tools were the stone ax, bow and arrow, and spear.

I heard the cheer as again the stone ax crushed a human skull, and I began praying for help.

Fields of the village found a stone ax .

Jeez, why pick on Google, the most useful tool since the stone ax?

It was totally rad at one point, but now it's like trying to work on a fusion reactor with a stone ax.

The blow that shatters the best stone ax leaves it unmarked.

And then he found the head of a stone ax.

A free savage with a stone ax can damage his society in only a very limited way before it reacts to control him.

The stone ax was gone from her hand; she had dropped it over the balcony rail into the courtyard.

The heavy stone ax opened the carcass and hacked through the major joints.