knock on

One word to George, and the whole thing would be knocked on the head.

He went over like someone had knocked him on the head.

He went to the house and knocked on the door several times.

A couple of hours later, someone knocked on the door.

They knocked on the door and I still wouldn't answer.

He went to room 417 and knocked on the door.

When they saw the girls and were told what had happened, one of them knocked on the door.

Just as she began to move, someone knocked on the door.

One of the men moved out in front and knocked on the door.

He knocked on the front door and got no answer.