Of, relating to, or located on the inside; inner. Of or relating to one's mental or spiritual being: "She thinks she has no soul, no interior life, but the truth is that she has no access to it\u201d ( David Denby). Situated away from a coast or border; inland. The internal portion or area. One's mental or spiritual life. The inland part of a political or geographic entity. The internal affairs of a country or nation. A representation of the inside of a building or room, as in a photograph.