usage /ˈju:zidʒ, ˈju:sidʒ/ n. 1.［c］&［u］惯用法，习语: modern English usage 现代英语惯用法 That phrase has come into (gone out of) usage. 那短语已为(已不再为)大家惯用 2.［u］使用，用法: the increasing usage of plastics 塑料制品的日益广泛使用