gumweed

n.

1.

any of various Western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock.

Thesaurus

Noun

1.

gumweed - any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock gum plant, rosinweed, tarweed genus Grindelia, Grindelia - large genus of coarse gummy herbs of western North and Central America Grindelia robusta - perennial gumweed of California and Baja California curlycup gumweed, Grindelia squarrosa - perennial gumweed of western and central North America herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests