The crossword solution for the term 'Napping Room' is DEN, which is a three-letter word. A DEN is a small room or an area within a larger room that is used for relaxation and privacy. It is often used as a place to sleep, read, or watch television. A napping room is a type of DEN that is specifically designed for sleeping during the day. It typically has comfortable furniture, dim lighting, and soundproofing to help create a peaceful environment.