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
1815–25; black + board
Example Sentences 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)
 
n
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 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin and History for blackboard
blackboard
1823, from black + board. 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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Difficulty index for blackboard

Some English speakers likely know this word

Tile value for blackboard

21
25
Scrabble Words With Friends

Quotes with blackboard