音标：['ʌndәgrәuθ]
n. 下层丛林, 生于大树下的矮树, 发育不全
在线英汉词典

undergrowth的短语、例句：

undergrowth (US underbrush)n [U] mass of shrubs, bushes, etc growing closely on the ground, esp under trees 灌木丛（尤指大树下的）
clear a path through the undergrowth 从灌木丛中开辟一条小路.