blackboard

From Wiktionary

[change] Pronunciation

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[change] Noun

A teacher using a blackboard

A child writing on a blackboard. Some blackboards are actually green in color.

1. A blackboard is a large, flat piece of slate, typically hung in a classroom and written on with erasable chalk.

   The teacher wrote the day's lesson on the blackboard.

[change] Synonyms

• chalkboard

[change] See also

• whiteboard