The Collaborative International Dictionary of English v.0.48:

Crayon \Cray"on\, v. t. [imp. & p. p. Crayoned (-?nd); p. pr.
   & vb. n. Crayoning.] [Cf. F. crayonner.]
   To sketch, as with a crayon; to sketch or plan.
   [1913 Webster]

         He soon afterwards composed that discourse, conformably
         to the plan which he had crayoned out.   --Malone.
   [1913 Webster]