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- diamondjubilee
- diamond jubilees
- diamond-lane
- diamond lane
- diamondlane
- diamond,-neil
- Diamond, Neil
- diamond,neil
- diamonds
- diamond-wedding
- diamond wedding
- diamondwedding
- Diana
- diana inquest
- diana-inquest
- dianainquest
- Diana Inquest, the
- diana,-princess-of-wales
- Diana, Princess of Wales
- diana ross
- diana-ross
- dianaross
- diane keaton
- diane-keaton
- dianekeaton
- 震区
- 震厉
- 震古烁今
- 震古铄今
- 震响
- 震天价
- 震天动地
- 震天撼地
- 震央
- 震奋
- 震怒
- 震怖
- 震恐
- 震悚
- 震情
- 震惊
- 震愕
- 震感
- 震慑
- 震摇
- 震撼
- 震撼人心
- 震旦
- 震旦纪
- 震服