frat
noun /fræt/
/fræt/
(North American English, informal)- a fraternity (= a club for a group of male students at an American college or university)
(美国男大学生的)联谊会, 兄弟会 - a frat boy (= a member of a fraternity)
(美国)男大学生联谊会会员
词源late 19th cent.: abbreviation. - a frat boy (= a member of a fraternity)