tumbleweed /ˈtʌmbəlˌwiːd/ noun plural tumbleweeds
plural tumbleweeds
Learner's definition of TUMBLEWEED
[count, noncount]
: a plant found especially in the North American desert that breaks away from its roots and is blown across the ground by the wind风滚草（尤见于北美洲沙漠地区的、从根部脱落后随风滚动的植物）