If someone or something is ~, they are busy or being used, with the result that they are not available for anything else. (INFORMAL)
He’s ~ with his new book. He’s working hard, you know...
ADJ: v-link ADJ, oft ADJ with/in n
If someone or something is ~, they are busy or being used, with the result that they are not available for anything else. (INFORMAL)
He’s ~ with his new book. He’s working hard, you know...
ADJ: v-link ADJ, oft ADJ with/in n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012