Ouija board

 
Pronunciation: /ˈwiːdʒə/

noun

( trademark in the US)
  • a board with letters, numbers, and other signs around its edge, to which a planchette, movable pointer, or upturned glass moves, supposedly in answer to questions from people at a seance.

Origin:

late 19th century: Ouija from French oui 'yes' + German ja 'yes'