名詞 tar weed:

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