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Definition of Gumweed
1. Noun. Any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock. 
Exact synonyms: Gum Plant, Rosinweed, Tarweed
Group relationships: Genus Grindelia, Grindelia
Specialized synonyms: Grindelia Robusta, Curlycup Gumweed, Grindelia Squarrosa
Generic synonyms: Herb, Herbaceous Plant
Group relationships: Genus Grindelia, Grindelia
Specialized synonyms: Grindelia Robusta, Curlycup Gumweed, Grindelia Squarrosa
Generic synonyms: Herb, Herbaceous Plant
Definition of Gumweed
1. a plant covered with a gummy substance [n -S]



