benweed ben·weed uncommon noun 1. widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity Synonymsragworttansy ragwortragweedSenecio jacobaea Related words Broader terms weed Parts Senecio WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
