bn:00017547n
Noun Concept
Categories: Articles with short description, Sewing equipment, Webarchive template other archives, Chalk
EN
chalk  gypsum  black chalk  chalk rock  Chalk stick
English:
rock
Definitions
Relations
Sources
EN
Chalk is a soft, white, porous, sedimentary carbonate rock. Wikipedia
Type of sedimentary rock, composed predominantly of calcium carbonate. Wikipedia Disambiguation
WordNet 3.0 & Open English WordNet
EN
Wikipedia
EN
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