A frat member is someone who is part of a fraternity or sorority. The three crossword solutions for the term FRAT MEMBER are BRO (3 letters), FRA (3 letters), and SOPH (4 letters). BRO stands for brother, which is a term used to refer to a male member of a fraternity. FRA stands for fraternity, which is an organization of male students at a college or university. SOPH stands for sophomore, which is a student in their second year of college or university.