tarweed definitions WordNet (r) 3.0 (2005) n 1: any of ... used medicinally; often poisonous to livestock [syn: gumweed, gum plant, tarweed, rosinweed] Webster's 1913 Dictionary Tarweed Tar"weed`, n. (Bot.) A name given to several resinous ...
common tarweed definitions WordNet (r) 3.0 (2005) n 1: California annual ... base of its yellow flower rays [syn: common madia, common tarweed, Madia elegans]