Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun mortarboard

2 senses of mortarboard

Sense 1
mortarboard, hawk -- (a square board with a handle underneath; used by masons to hold or carry mortar)
       => board -- (a flat piece of material designed for a special purpose; "he nailed boards across the windows")

Sense 2
mortarboard -- (an academic cap with a flat square with a tassel on top)
       => cap -- (a tight-fitting headdress)