co-ed /ˌkoʊˈɛd/noun 3adjective 2forms 3 noun3 •(informal, old-fashioned) A young woman who attends college.To many a student the most appealing subject in college is a coed. A coed is usually less interested in what she gets out of college than whom. — 1968 •(informal, old-fashioned) A (generally young) woman, especially on the campus of a college or other educational institute.1959: A coed is exotic with mascara on her eye lashes, demureness in a sweater, and 'the future homemaker' with a can opener. — 1959 •A student of either sex at a co-educational institution.The majority of college coeds are female, but many still have trouble paying for tuition. Scholarships designed specifically for women can be useful in this situation. — 2023 adjective2 •Of an educational institution, teaching both males and females. •Mixing males and females; unisex; mixed-gender.We played in a co-ed band. formsco-eds · more co-ed · most co-ed