What is aidenn in raven?

In Edgar Allan Poe's poem "The Raven," "Aidenn" refers to a mystical and idealized paradise, often interpreted as a version of Eden or a representation of lost bliss and happiness. The protagonist yearns for his deceased love, Lenore, and sees Aidenn as a place where he could reunite with her. The use of the term underscores themes of longing, loss, and the desire for transcendence beyond the sorrow of the present.