From Longman Dictionary of Contemporary Englishupperclasswomanup‧per‧class‧wom‧an /ˌʌpəˈklɑːsˌwʊmən $ -pərˈklæs-/ noun (plural upperclasswomen /-ˌwɪmɪn/) [countable] American EnglishSESSEC a female student in the last two years of school or university