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blackboard

[ blak-bawrd, -bohrd ]
/ ˈblækˌbɔrd, -ˌboʊrd /
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noun
a sheet of smooth, hard material, especially dark slate, used in schools, lecture rooms, etc., for writing or drawing on with chalk.
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Also called chalkboard.
Compare greenboard.

Origin of blackboard

First recorded in 1815–25; black + board
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use blackboard in a sentence

British Dictionary definitions for blackboard

blackboard
/ (ˈblækˌbɔːd) /

noun
a hard or rigid surface made of a smooth usually dark substance, used for writing or drawing on with chalk, esp in teaching
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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