gumweed

Noun gumweed has 1 sense

• gumweed(n = noun.plant) gum plant, rosinweed, tarweed - any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock;
is a member of genus grindelia, grindelia
has particulars: grindelia robusta, curlycup gumweed, grindelia squarrosa
is a kind of herb, herbaceous plant