mortarboard | sense examples, Usage and Definition from wordnet dictionary online

Noun mortarboard has 2 senses

mortarboard, hawk - a square board with a handle underneath; used by masons to hold or carry mortar
--₁ is a kind of board
mortarboard - an academic cap with a flat square with a tassel on top
--₂ is a kind of cap
--₂ is a part of academic costume

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