- n gumweed any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock
Century Dictionary and Cyclopedia
- n gumweed The gum-plant. Grindelia (which see; also Grindelia).
- n gumweed A weed of the Great Plains, Lygodesmia juncea, of the Cichoriaceæ. It is a rigid, branching, skeleton-like plant with most of the leaves very small or reduced to scales.