greenweed

/ˈɡriːnwiːd/
noun
  1. A plant of the genus Genista, with yellow flowers and green stems, often found in dry, open areas.
    • The farmer cleared the greenweed from the pasture to make room for grass.
    • Bees love the bright yellow flowers of greenweed.
    • Greenweed grows wild along the roadside in the summer.
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