The word
"stamp" can have a few different meanings. It can refer to a small piece of paper that you stick onto a letter or package to show that you've paid for the postage.
"Stamp" can also mean to press or hit something down forcefully, like when you
stamp your foot on the ground. Additionally,
"stamp" can describe a small device used to create an imprint on paper, like a rubber
stamp with an inked design for decoration or authentication.
Full definition