1. purple Noun The colour worn by an emperor or king; by extension, imperial power.
  2. purple Noun A colour/color that is a dark blend of red and blue; dark magenta.
  3. purple Noun Any of various species of mollusks from which Tyrian purple dye was obtained, especially the common dog whelk.
  4. purple Adjective Having a colour/color that is a dark blend of red and blue.
  5. purple Adjective Not predominantly red or blue, but having a mixture of Democrat and Republican support, as in "purple state", "purple city".
  6. purple Verb To turn purple in colour.