BLACKBOARD

blackboard, chalkboard

(noun) sheet of slate; for writing with chalk

Source: WordNet® 3.1

Etymology

Noun

blackboard (plural blackboards)

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

Hypernyms

• writing board

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.

Source: Wiktionary

Black"board`, n.

Definition: A broad board painted black, or any black surface on which writing, drawing, or the working of mathematical problems can be done with chalk or crayons. It is much used in schools.

Source: Webster’s Unabridged Dictionary 1913 Edition

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