blackboard
Definition from Wiktionary, the free dictionary
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[edit] English
[edit] Etymology
From black + board, because such surfaces were once typically made of black slate.
[edit] Pronunciation
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Audio (US) (file)
[edit] Noun
blackboard (plural blackboards)
Physicist Paul Dirac at the blackboard.
- A large flat surface, finished with black slate or a similar material, that can be written upon with chalk and subsequently erased; a chalkboard
[edit] Related terms
[edit] Translations
a surface that can be written upon with chalk
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[edit] Verb
blackboard (third-person singular simple present blackboards, present participle blackboarding, simple past and past participle blackboarded)
- To use a blackboard to assist in an informal discussion.