Noun: tarweed
- Any of various resinous glandular plants of the genus Madia; of western North and South America
"The tarweed's sticky foliage clung to hikers' clothing"
- Any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock
"Cattle avoided the tarweed growing along the fence line";
- gumweed, gum plant, rosinweed
Derived forms: tarweeds
Type of: herb, herbaceous plant
Part of: genus Grindelia, genus Madia, Grindelia, Madia
Encyclopedia: Tarweed