undergrowth noun
ADJ. deep, dense, tangled, thick
QUANT. patch
VERB + UNDERGROWTH clear
PREP. into the ~ The snake slithered off into the undergrowth. | in the ~ I noticed someone hiding in the undergrowth. | through the ~ I could hear him crashing through the undergrowth.
You can also check other dicts: undergrowth (English, 中文解释 ), wordnet sense, Collins Definition