English edit

 
A butterbur (Petasites hybridus)
 
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Etymology edit

butter +‎ bur: its large leaves were once used to wrap butter.

Noun edit

butterbur (plural butterburs)

  1. Any of several Eurasian herbs, of the genus Petasites, having dense clusters of often purple flowers.
    Synonyms: butterdock, sweet coltsfoot

Derived terms edit

Translations edit