大学英语-- EASYTEST如鱼得水记单词·英语专业八级词汇语境记忆

释义：n.衰微，亏缺，变弱；v.变小，亏缺，呈下弦

例句：
The moon is on the wane. 月亮渐亏。
Her enthusiasm for him was beginning to wane. 她对他的热情在开始减退。