defoliate

1. V-T To defoliate an area or the plants in it means to cause the leaves on the plants to fall off or be destroyed. This is done especially in war to remove protection from an enemy. 脫葉

...Agent Orange, the infamous, dioxin-laced cocktail used to defoliate the Vietnamese jungle. ...橙劑，摻有二惡英的劣質雞尾酒用于使越南叢林樹木落葉。

2. defoliationN-UNCOUNT

...preventing defoliation of trees by caterpillars. ...預防因毛毛蟲造成的樹木脫葉。