mortarboard
English
![](Images/wiktionary/LinusPaulingGraduation1922.jpg.webp)
Etymology
mortar + board
Noun
mortarboard (plural mortarboards)
- A square board, with a handle, on which mortar or plaster is carried: a hawk.
- An academic cap that has a flat square top with a tassel.
Synonyms
- (tool): hawk
- (clothing): cap