Dictionary

mortarboard

noun mor·tar·board \ˈmr-tər-ˌbrd\

: a hat with a flat square top that is worn for special ceremonies at some schools

Full Definition of MORTARBOARD

1
:  an academic cap consisting of a closely fitting headpiece with a broad flat projecting square top
2
a :  hawk 2
b :  a board or platform about three feet (one meter) square for holding mortar
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Examples of MORTARBOARD

  1. The students donned robes and mortarboards for graduation.

Illustration of MORTARBOARD

First Known Use of MORTARBOARD

1854

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