mortarboard
Word family nounmortarmortarboard
College
mor·tar·board /ˈmɔːtəbɔːd $ ˈmɔːrtərbɔːrd/ noun [countableC] 
SECa black cap with a flat square top worn by members of some universities on formal occasions 学士帽，学位帽 →5 see picture at 见图 hat- Ivory Coast
- ivorycoast
- ivory-soap
- Ivory Soap
- ivorysoap
- ivory-tower
- ivory tower
- ivorytower
- ivory-towered
- ivory-towerish
- ivory towers
- I vote
- I vote ...
- i-vow-to-thee-my-country
- I Vow To Thee My Country
- ivs
- ivy
- ivy
- ivy league
- ivy-league
- ivyleague
- Ivy League, the
- I wasn't born yesterday
- I wasn't thinking
- I was robbed