defoliate/ˌdi:ˈfəulɪeɪt; di`folɪˌet/ v[Tn]destroy the leaves of (trees or plants) 毁掉（树木或花草）的叶 forests defoliated by chemicals in the air 被空气中的化学物质毁掉树叶的林木.
牛津英汉双解词典