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yellowweed

American  
[yel-oh-weed] / ˈyɛl oʊˌwid /

noun

  1. any of certain coarse goldenrods.

  2. the European ragwort, Senecio jacobaea.


yellowweed British  
/ ˈjɛləʊˌwiːd /

noun

  1. any of various yellow-flowered plants, such as the ragwort in Europe and some species of goldenrod in the US

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of yellowweed

First recorded in 1750–60; yellow + weed 1