foot drop

I didn't think even he would tackle a sixty-thousand-foot drop.

Before us, over the brink of a five hundred-foot drop, a great glistening plain stretched into the distance.

Frederick ordered her to be quiet, and she let her foot drop again on the leather upholstery.

Whew, I wouldn't like to take the chances of a thirty-foot drop like that, if the branch broke or his trousers tore!

There was a six-foot drop on the far side into a lane; but it was now neck or nothing, so I let myself go.