[krey-on, -uhn]
a pointed stick or pencil of colored clay, chalk, wax, etc., used for drawing or coloring.
a drawing in crayons.
verb (used with object)
to draw or color with a crayon or crayons.
verb (used without object)
to make a drawing with crayons.

1635–45; < French, equivalent to craie chalk (< Latin crēta clay, chalk) + -on noun suffix

crayonist, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
crayon (ˈkreɪən, -ɒn)
1.  a small stick or pencil of charcoal, wax, clay, or chalk mixed with coloured pigment
2.  a drawing made with crayons
3.  to draw or colour with crayons
[C17: from French, from craie, from Latin crēta chalk]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1644, from Fr. crayon "pencil," orig. "chalk pencil," from craie "chalk," from L. creta "chalk."
Online Etymology Dictionary, © 2010 Douglas Harper
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Computing Dictionary

crayon definition

1. Someone who works on Cray supercomputers. More specifically, it implies a programmer, probably of the CDC ilk, probably male, and almost certainly wearing a tie (irrespective of gender). Systems types who have a Unix background tend not to be described as crayons.
2. A computron that participates only in number crunching.
3. A unit of computational power equal to that of a single Cray-1. There is a standard joke about this usage that derives from an old Crayola crayon promotional gimmick: When you buy 64 crayons you get a free sharpener.
[Jargon File]
The Free On-line Dictionary of Computing, © Denis Howe 2010
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Encyclopedia Britannica


an implement for drawing made from clay, chalk, plumbago, dry colour, and wax. There are two types of crayons, the colouring crayon and the chalk crayon.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
There are games that can be played in transportation for real reasons where a
  piece of paper and a crayon will work overnight.
There isn't even so much as a crayon mark on any of the walls.
The presenter asks participants to take a watercolor paper square and a crayon
  and create any kind of design or drawing.
Each side of the activity cube has a different game, including shape sorting
  cut-outs and crayon character wheels.
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