birrete
mortarboard
beret
a flat, round hat
Birrete means mortarboard (the square academic cap) and is similar in sound to the English word beret0. Both are types of flat hats0, but a birrete is square and worn for academic ceremonies.
noun
- mortarboardA square academic cap with a flat top and tassel, worn at graduation ceremoniesLos estudiantes lanzaron sus birretes al aire después de la ceremonia. // The students threw their mortarboards in the air after the ceremony.