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Noun: gumweed
  1. Any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock
    - gum plant, tarweed, rosinweed

Derived forms: gumweeds

Type of: herb, herbaceous plant

Part of: genus Grindelia, Grindelia

Encyclopedia: Gumweed