(upperclassmen)
An ~ is a junior or senior student in an American high school, college, or university. (AM)
N-COUNT
(upperclassmen)
An ~ is a junior or senior student in an American high school, college, or university. (AM)
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012