tumbleweed (n.)any plant that breaks away from its roots in autumn and is driven by the wind as a light rolling mass;
tumbleweed (n.)prickly bushy Eurasian plant; a troublesome weed in central and western United States;
Synonyms: Russian thistle / Russian tumbleweed / Russian cactus / Salsola kali tenuifolia
tumbleweed (n.)bushy annual weed of central North America having greenish flowers and winged seeds;
Synonyms: winged pigweed / Cycloloma atriplicifolium
tumbleweed (n.)bushy plant of western United States;
Synonyms: Amaranthus albus / Amaranthus graecizans
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