nPortcrayonA metallic handle with a clasp for holding a crayon.
Century Dictionary and Cyclopedia
nportcrayonA holder for chalk, charcoal, crayon, or the like, used in drawing. It is usually a kind of tube of metal, split at one or both ends, and tending to spring open there, but held fast by rings which slide upon it, so that the drawing-material is nipped and held firmly.
Webster's Revised Unabridged Dictionary
F. porte-crayon,; porter, to carry + crayon, a crayon