The term 'ROOMETTE' is an 8-letter solution to the crossword puzzle clue 'compartment in a sleeping car'. A ROOMETTE is a small, private sleeping compartment on a train. It typically contains two facing seats that can be converted into a bed, and also includes a fold-down table, a washbasin, and a toilet. Roomettes are usually found on long-distance trains and provide passengers with a comfortable and private space to sleep during their journey.