tumbleweed
名词 tumbleweed:
any plant that breaks away from its roots in autumn and is driven by the wind as a light rolling mass
prickly bushy Eurasian plant; a troublesome weed in central and western United States
同义词:Russian thistle, Russian tumbleweed, Russian cactus, Salsola kali tenuifolia
bushy annual weed of central North America having greenish flowers and winged seeds
同义词:winged pigweed, Cycloloma atriplicifolium
bushy plant of western United States