What douse mortarboard mean in English?

"Mortarboard" is a noun that refers to the square, flat-topped academic cap that is often worn by graduates at university ceremonies. It's also sometimes referred to as a graduation cap or academic cap.

The term "mortarboard" comes from the fact that the cap's flat top resembles a mortar, a bowl used for grinding or mixing substances, and its brim resembles a board.

Here are some examples of how the word "mortarboard" is used in a sentence:

* The students all wore mortarboards and gowns for the graduation ceremony.

* She tossed her mortarboard in the air after receiving her diploma.

* The mortarboard is a symbol of academic achievement.