The term 'Ouija' is a 5-letter crossword solution for the term 'Planchette Board with a'. It is a board game that was first introduced in the late 19th century. The game involves players placing their hands on a planchette, which is a small heart-shaped piece of wood, and asking questions to which they receive answers from a spiritual force. The answers are spelled out by the planchette moving across the board. The game has been popularized in modern culture, often being used as a tool for divination and communication with the spirit world.