any of certain coarse goldenrods.
the European ragwort, Senecio jacobaea.
Origin of yellowweed
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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