/weɪn ||; wen/verb[I] 1 (written 书面语) to become gradually weaker or less important 衰微;没落: My enthusiasm was waning rapidly. 我的热情迅速减退。
2 (used about the moon) to appear slightly smaller each day after being full and round (指月亮)缺,亏 [OPP] wax ² 反义词为wax^2