What does "crayon" mean?

Additional senses

1. 2.(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.
2. 3.To sketch, as with a crayon; to sketch or plan. He soon afterwards composed that discourse, conformably to the plan which he had crayoned out. Malone.