penknife

He stabbed her twice with a penknife, and one of the wounds was potentially fatal.

No you are not, he answered settling himself back in an easy position, and taking a penknife from his pocket to play with.

She was pruning a rose-bush with Bub's penknife, and when she heard him coming she wheeled, quivering.

On arriving at his house they found him rather unwell; he went about the room bent like a half-opened penknife.

I opened it with a penknife soaked in an antiseptic solution, and cleaned it thoroughly.

On the cover he had scratched an inscription with his penknife, "The Emperor to his little friend Julia."