The term 'Revenant' is a noun that refers to a person who has returned, especially from the dead. It is derived from the French word 'revenir, ' which means 'to come back.' In popular culture, the term is often used to refer to a GHOST or spirit that has returned from the afterlife. The crossword solution for the term 'Revenant' is 'GHOST, ' which is a five-letter word that refers to an apparition or supernatural being that is believed to haunt certain locations or people.