knock

He went round to the back door, where he thought it best, in the first place, to knock.

There was no answer to his knock, and by trying the knob he found that she had locked herself in.

Grace was in the middle of a hasty toilet when a knock sounded on the door.

While he was thus raging a knock came to the door, and a maid entered.

While Margaret groaned in bitterness, she heard a knock at the street door.

"Come in," he called cheerily, in answer to a knock on the door.

Knock at the door, whence the sable line of the funeral is next to issue!

Here a step was heard on the stairs—a knock at the door—and Birnie entered.

Mr. Burrows himself answered the knock, and gave him a hearty greeting.

"Suppose we knock off talking for a while, Steve," suggested Max.