vigilance /'vidjibns; 'Vi6zslsns/ n [U] watchfulness; keeping watch: 警備; 普戒; 守?zé)o exercise ~. 警戒; 守夜。 committee, (chiefly US) self-appointed group of persons who maintain order in a community where organization is imperfect or has broken down. (主美) 保安委員會(huì) (一種在組織不健全的地方自行設(shè)立的民間治安團(tuán)體) 。