gumweed
1. [ noun ] (botany) any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock
Synonyms: tarweed rosinweed gum_plant
Related terms: herb Grindelia_robusta curlycup_gumweed Grindelia
Similar spelling:   gummed
  gumwood
  gummite