Origin of chalk

before 900; Middle English chalke, Old English cealc < Latin calc- (stem of calx) lime

Related forms

chalk·like, adjectiveun·chalked, adjective
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Examples from the Web for chalk

British Dictionary definitions for chalk

chalk

/ (tʃɔːk) /

noun

verb

Derived Forms

chalklike, adjectivechalky, adjectivechalkiness, noun

Word Origin for chalk

Old English cealc, from Latin calx limestone, from Greek khalix pebble
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for chalk

chalk

[ chôk ]

A soft, white, gray, or yellow limestone consisting mainly of calcium carbonate and formed primarily from the accumulation of fossil microorganisms such as foraminifera and calcareous algae. Chalk is used in making lime, cement, and fertilizers, and as a whitening pigment in ceramics, paints, and cosmetics. The chalk used in classrooms is usually artificial.
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