English

Definition of ragweed noun from the Oxford Advanced Learner's Dictionary

 

ragweed

 noun
noun
BrE BrE//ˈræɡwiːd//
 
; NAmE NAmE//ˈræɡwiːd//
 
[uncountable]
 
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a N American plant with small green flowers that contain a lot of pollen, which causes hay fever in some people
See the Oxford Advanced American Dictionary entry: ragweed