Chalk is defined as a soft limestone that is white, gray or yellow or something made of this substance.(noun)
An example of chalk is what the teacher uses to write on the blackboard.
The definition of chalk is made or drawn with soft white, gray or yellow limestone.(adjective)
An example of chalk used as an adjective is in the phrase "chalk drawing," which means a drawing made with this substance.
See chalk in Webster's New World College Dictionary
Origin: ME < OE cealc < L calx, lime, limestone: see calcium
See chalk in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old English cealk
Origin: , from Latin calx, calc-, lime; see calx.
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