stamp on

stamp something (up)on someone or something

to affix an informative label onto someone or something, as with a rubber stamp. (Upon is formal and less commonly used than on.) The attendant stamped a date upon each person who entered the dance hall. The person at the door stamped something on my hand when I came in.

See also: stamp

stamp on someone or something

to strike down hard on someone or something with the bottom of the foot. The attacker stamped on his victim after he had knocked him down. Walter stamped on a spider.

See also: stamp