He reached down and picked up it small but sharp rock.
With a sharp rock and a stick I started to work on the animals.
By then Star had a fire going and was cleaning fish with a sharp rock.
He walked along the bank, until it turned from damp earth to sharp, black rock.
"Only if you draw on the screen with a real sharp rock."
The last shot hit the outside with the sound of a dish breaking on one sharp rock.
A small, sharp rock was pressing against the side of my neck.
Data ran to help her, jumping from one sharp rock to another and then into the water.
On the north side, at the base of the wall, there were sharp rocks.
She began looking over the ground for a sharp rock.