n. (Roman Catholic Church) one of a group of more than 100 prominent bishops in the Sacred College who advise the Pope and elect new Popes
n. the number of elements in a mathematical set; denotes a quantity but not the order
n. a variable color averaging a vivid red
n. 红衣主教( cardinal的复数形式 ); 红衣凤头鸟（见于北美, 雄鸟为鲜红色）; 基数