(~s)
A ~ is a group of three people together, especially musicians or singers, or a group of three things that have something in common.
N-COUNT-COLL
(~s)
A ~ is a group of three people together, especially musicians or singers, or a group of three things that have something in common.
N-COUNT-COLL
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012