The Ouija also known as a spirit board or talking board, is a flat board marked with the letters of the alphabet, the numbers 0–9, the words "yes", "no", "hello" (occasionally), and "goodbye", along with various symbols and graphics. It uses a small heart-shaped piece of wood or plastic called a planchette. Participants place their fingers on the planchette, and it is moved about the board to spell out words.

"Ouija" was formerly a trademark belonging to Parker Brothers, and has subsequently become a trademark of Hasbro, Inc. in the United States, but is often used generically to refer to any talking board. According to Hasbro, players take turns asking questions and then "wait to see what the planchette spells out" for them.

A planchette from the French for "little plank", is a small, usually heart-shaped flat piece of wood equipped with two-wheeled castors and a pencil-holding aperture, used to facilitate automatic writing.

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