- a device consisting of a small board, or planchette, on legs that rest on a larger board marked with words, letters of the alphabet, etc., and that by moving over the larger board and touching the words, letters, etc., while the fingers of spiritualists, mediums, or others rest lightly upon it, is employed to answer questions, give messages, etc.
- trademark a board on which are marked the letters of the alphabet. Answers to questions are spelt out by a pointer or glass held by the fingertips of the participants, and are supposedly formed by spiritual forces
1891, a trademark name (originally by Kennard Novelty Co., Baltimore, Md.), compounded from French oui + German ja, both meaning “yes.”