Definition of ragwort noun from the Oxford Advanced American Dictionary

 

ragwort

 noun
noun
NAmE//ˈræɡwərt//
 
, NAmE//ˈræɡwɔrt//
 
[uncountable]
 
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a wild plant with yellow flowers, poisonous to cows and horses
See the Oxford Advanced Learner's Dictionary entry: ragwort