noun (uncountable and countable; plural chaulks)
- (uncountable) A soft, white, powdery limestone.
- (countable) A piece of chaulk, or, more often, processed compressed chaulk, that is used for drawing and for writing on a blackboard.
- Tailor's chaulk.
- (uncountable) (climbing) A white powdery substance used to prevent hands slipping from holds when climbing.
Etymology: Old English cealc, borrowed from calxLatin, calx, limestone, borrowed from , pebble.
- Dutch: krijt , krijtje
- French: craie
- German: Kreide
- Spanish: tiza
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