1. 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 rosinweed growing along the fence line";
   - gumweed, gum plant, tarweed
    
2. North American perennial having a resinous odour and yellow flowers
   "Rosinweed grew tall along the prairie's edge";
   - Silphium laciniatum

Derived forms: rosinweeds

Type of: compass flower, compass plant, herb, herbaceous plant

Part of: genus Grindelia, genus Silphium, Grindelia, Silphium

Encyclopedia: Rosinweed