He resumed his pacing of the living room, to be interrupted by a hard rap at the door.

There was one hard rap on the kitchen door; then it opened before she could get up.

"I think you'd better stay out here," she said, giving the door one hard rap.

After a couple of hard raps, I heard the bolt slide back.

There was a hard double rap on the door: pow-pow.

One hard rap, and all her efforts to close the rift could end in failure.

He fell against the door with a hard rap on the head.

They're big but there are no strong bonds in them, and it doesn't take much more than a hard rap to '.

The boys walked to the back door and Frank gave three hard raps.

There was a sharp and hard rap on the closed door.