How do you spell Crayon

Available Definitions:
1)  n. - An implement for drawing, made of clay and plumbago, or of some preparation of chalk, usually sold in small prisms or cylinders.
2)  n. - A crayon drawing.
3)  n. - A pencil of carbon used in producing electric light.
4)  v. t. - To sketch, as with a crayon; to sketch or plan.