1. Any of various resinous glandular plants of the genus Madia; of western North and South America 
2. Any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock
   - gumweed, gum plant, rosinweed

Derived forms: tarweeds

Type of: herb, herbaceous plant

Part of: genus Grindelia, genus Madia, Grindelia, Madia

Encyclopedia: Tarweed

• homolosine projection
• homomorphism
• homomorphy
• Homona
• Homona coffearia
• homonym
• homonymic
• homonymous
• homonymy
• homoousian
• homophile
• homophobe
• homophobia
• homophobic
• homophone
• homophonic
• homophonous
• homophony
• Homoptera
• homopteran
• homopterous
• homopterous insect
• homosexual
• homosexualism
• homosexuality