knife-edge

A touch of a knife-edge to the rope, and the girl would be saved.

Followed by another, he advanced along the knife-edge to their wounded comrade.

Her offered, her passive extent, in other words, was about that of a knife-edge.

The points of the pins serve as a knife-edge for the rocker.

The knife-edge is then turned forward and made to cut its way out.

For a moment it hung on the knife-edge of the world, and then dipped down and was gone.

The town is balancing on the knife-edge of a panic at this moment.

It is a wedge, but a wedge working on a different principle from a knife-edge.

At one place it ran along the crest of a ridge that was no more than a knife-edge.

He is slashed all up the forearm; my wrist is but scratched with a knife-edge.