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mortarboard

American  
[mawr-ter-bawrd, -bohrd] / ˈmɔr tərˌbɔrd, -ˌboʊrd /

noun

  1. a board, usually square, used by masons to hold mortar.

  2. Also called cap.  a cap with a close-fitting crown surmounted by a stiff, flat, square piece from which a tassel hangs, worn as part of academic costume.


mortarboard British  
/ ˈmɔːtəˌbɔːd /

noun

  1. a black tasselled academic cap with a flat square top covered with cloth

  2. Also called: hawk.  a small square board with a handle on the underside for carrying mortar

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of mortarboard

First recorded in 1850–55; mortar 2 + board

Vocabulary lists containing mortarboard

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Trading your mortarboard for a company badge is exciting.

From The Wall Street Journal May 21, 2026

The actor and comedian wore a ceremonial red and black robe and mortarboard hat for the ceremony at the Sheldonian Theatre.

From BBC Jun. 23, 2022

The letter included a 2019 letter from then-Attorney General Mike Hunter that an Indigenous student’s right to wear eagle feathers on their mortarboard is protected under the Oklahoma Religious Freedom Act.

From Seattle Times May 19, 2022

He joked with the high school students that many would not have looked great in a mortarboard cap typical of traditional graduations.

From Washington Post May 16, 2020

That summer of 1983, I graduated from high school at the age of twenty, by far the oldest senior tossing his mortarboard on the football field that day.

From "The Kite Runner" by Khaled Hosseini

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