An anagram is a word formed by rearranging all the letters of another word, using each letter exactly once. These words use every letter from "RNWOETASD":
A fetid European species of elder (Sambucus Ebulus); dwarf elder; wallwort; elderwort; -- called also Daneweed, Dane's weed, and Dane's-blood. [Said to grow on spots where battles were fought against the Danes.]