Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

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

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun academia An informal lecture on an academic subject.
  • noun 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.

  • noun a talk that uses a blackboard and chalk

Etymologies

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Examples

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