A ~ letter or parcel is sent by a special postal service, for which you pay extra money for insurance in case it gets lost.
He asked his mother to send it by ~ mail.
ADJ: usu ADJ n
A ~ letter or parcel is sent by a special postal service, for which you pay extra money for insurance in case it gets lost.
He asked his mother to send it by ~ mail.
ADJ: usu ADJ n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012