Noun rosinweed has 2 senses
- rosinweed, Silphium laciniatum - North American perennial having a resinous odor and yellow flowers
--1 is a kind of compass plant, compass flower
--1 is a member of Silphium, genus Silphium
- gumweed, gum plant, tarweed, rosinweed - any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock
--2 is a kind of herb, herbaceous plant
--2 is a member of Grindelia, genus Grindelia
--2 has particulars: Grindelia robusta; curlycup gumweed, Grindelia squarrosa
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