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 "RSDEETO":
A genus of long, slender, wormlike bivalve mollusks which bore into submerged wood, such as the piles of wharves, bottoms of ships, etc.; -- called also shipworm. See Shipworm. See Illust. in App.