clasp knife
jackknife

"The old fox could build a ship with a clasp knife!"

There was a large clasp knife in my bag; that would at least help me psychologically.

She gripped the clasp knife in her right hand and opened the blade.

He opened his clasp knife and cut away the rotten line.

A clasp knife, still closed, lay beside his right hand.

When the man's hand came back into view it was made longer by a clasp knife.

She was pulling the clasp knife out of her husband's back.

He took a big stag-handled clasp knife from his pocket.

He brought out a large clasp knife, opened it up, and began cleaning his nails.

He picked up the clasp knife and crossed to the locked door.