Down came the great flint knife, but its aim was lost.

He drew out the flint knife from his pack, handed it over.

They are tools, like our flint knives or the travois.

With his flint knife, he began to scrape where the dust seemed soft.

He put the hèsotsan aside and took out his flint knife.

With a sharp flint knife, she cut the cord between the ties.

She ignored him and went to the fire, where her flint knife lay on the ground.

How, I wondered, does one go about cutting out a human heart when equipped with only a flint knife?

An Aztec priest, with only a flint knife, would have problems using such an approach.

He took the flint knife from his belt and killed the tortured creature.