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blackboard

[blak-bawrd, -bohrd] /ˈblækˌbɔrd, -ˌboʊrd/
noun
1.
a sheet of smooth, hard material, especially dark slate, used in schools, lecture rooms, etc., for writing or drawing on with chalk.
Also called chalkboard.
Compare greenboard.
Origin
1815-1825
1815-25; black + board
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for blackboard
  • Writing the ideas on the blackboard may reinforce reading skills.
  • He argues that economists should abandon blackboard deduction in favour of computer simulation.
  • It has no desks, only a single blackboard and intermittent supplies of chalk.
  • And a projector is easier to move than a blackboard-sized screen.
  • Accept all answers as valid and place the word or words on overhead, blackboard or newsprint.
British Dictionary definitions for blackboard

blackboard

/ˈblækˌbɔːd/
noun
1.
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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Word Origin and History for blackboard
n.

1823, from black + board (n.1). Blackboard jungle "inner-city school rife with juvenile delinquency" is from Evan Hunter's novel title (1954).

Online Etymology Dictionary, © 2010 Douglas Harper
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Word Value for blackboard

21
25
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