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Blackboard

//ˈblækbɔɹd// noun, verb

Definitions

Noun
  1. 1
    A large flat surface, finished with black slate or a similar material, that can be written upon with chalk and subsequently erased; a chalkboard.

    "Drawings and pictures are more than mere ornaments in scientific discourse. Blackboard sketches, geological maps, diagrams of molecular structure, astronomical photographs, MRI images, the many varieties of statistical charts and graphs: These pictorial devices are indispensable tools for presenting evidence, for explaining a theory, for telling a story."

  2. 2
    sheet of slate; for writing with chalk wordnet
Verb
  1. 1
    To use a blackboard to assist in an informal discussion.

Etymology

Etymology 1

From black + board, because such surfaces were once typically made of black slate.

Etymology 2

From black + board, because such surfaces were once typically made of black slate.

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