Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A lecture, often informal, illustrated with diagrams chalked on a blackboard.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An informal lecture on an academic subject.
  • n. A music hall act in which a performer makes chalk caricatures whilst reciting a monologue

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a talk that uses a blackboard and chalk

Etymologies

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Examples

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