Two of the bridge officers hammered on the pressure door with their fists.

She hammered softly with her fists on the unyielding door.

I knelt and hammered on the edge of the bed with my clenched fists.

Furious, she hammered his back with her fists and tried to find enough air to speak.

I hammered with my fists against the invisible wall.

He hammered it with his fists, then scrambled out again.

"Do you mean someone hammered there with their fists?"

She stepped forward and hammered on the door with her small fists.

I hammered on him with my fists for a while, and right at first he gave as good as he got.

He hammered on the table with his fists and shouted in anger.