mortarboard
mor.tar.board \'mo.rt-*r-.bo-(*)rd, -.bo.(*)rd\ n 1a: HAWK 1b: a board or platform about 3 feet square for holding mortar 2: an academic cap consisting of a closely fitting headpiece with a broad f lat projecting square top
Webster's English Dictionarymor.tar.board \'mo.rt-*r-.bo-(*)rd, -.bo.(*)rd\ n 1a: HAWK 1b: a board or platform about 3 feet square for holding mortar 2: an academic cap consisting of a closely fitting headpiece with a broad f lat projecting square top