What is "crayon board"

Crayon \Cray"on\ (kr?"?n), n. [F., a crayon, a lead pencil (crayon Cont['e] Cont['e]'s pencil, i. e., one made a black compound invented by Cont['e]), fr. craie chalk, L. creta; said to be, properly, Cretan earth, fr. Creta the island Crete. Cf. Cretaceous.]

1. An implement for drawing, made of clay and plumbago, or of some preparation of chalk, usually sold in small prisms or cylinders.

   Let no day pass over you . . . without giving some strokes of the pencil or the crayon.
   --Dryden.

   Note: The black crayon gives a deeper black than the lead pencil. This and the colored crayons are often called chalks. The red crayon is also called sanguine. See Chalk, and Sanguine.

2. A crayon drawing.

3. (Electricity) A pencil of carbon used in producing electric light.

   Crayon board, cardboard with a surface prepared for crayon drawing.

   Crayon drawing, the act or art of drawing with crayons; a drawing made with crayons.

n. cardboard with a surface prepared for crayon drawing