subfusk
/sʌbˈfʌsk/Definitions
1. adjective
relating to or characteristic of a student’s or scholar’s dress, especially formal academic dress
“The professor asked the students to wear their subfusc attire to the graduation ceremony.”
2. noun
a student’s or scholar’s formal academic dress, especially for a special occasion
“The Oxford University subfusc is worn on formal occasions such as the Encaenia ceremony.”