(~s)
Someone’s ~ is the language that they learned first and speak best; used especially when someone speaks more than one language.
N-COUNT
(~s)
Someone’s ~ is the language that they learned first and speak best; used especially when someone speaks more than one language.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012