chalk
Proposed by a contributor, not yet supported by evidence.
Also seen as: chalked
Sense 1
A soft, white, powdery limestone (calcium carbonate, CaCO₃).
Noun
Examples
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
A piece of chalk, or nowadays processed compressed gypsum (calcium sulfate, CaSO₄), that is used for drawing and for writing on a blackboard (chalkboard).
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 3
To apply chalk to anything, such as the tip of a billiard cue.
Verb
Examples
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 4
To record something, as on a blackboard, using chalk.
Verb
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “chalk” mean?
A soft, white, powdery limestone (calcium carbonate, CaCO₃).
Is “chalk” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.