butterweed

[ buht-er-weed ]

noun
  1. any wild plant having conspicuously yellow flowers or leaves.

  2. the horseweed.

  1. a ragwort (Senecio jacobaea) or groundsel (S. vulgaris), both having yellow ray flowers.

Origin of butterweed

1
First recorded in 1885–90; butter + weed1

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024