plumed(adjective) adjective1. having or covered with or abounding in plumes- the plumed serpent- white-plumed egretsSimilar word(s): feathered, plumy2. having an ornamental plume or feathery tuftSimilar word(s): feathered, plumate, plumose3. (of a knight's helmet) having a decorative plumeSimilar word(s): adorned, decorated, crested