Learn how to say Planchette correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word planchette:
a small board supported on castors, typically heart-shaped and fitted with a vertical pencil, used for automatic writing and in seances:
the planchette jerked and skittered to the upper left-hand corner of the paper
mid 19th century: from French, literally ‘small plank’, diminutive of planche