1. blackboard - Noun
2. blackboard - Verb
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 dictionaryIt is still an unending source of surprise for me to see how a few scribbles on a blackboard or on a sheet of paper could change the course of human affairs. Stanislaw Ulam
What was most odd was that teachers would tell you what to do and what to think and they would write everything on a blackboard and you would copy it all down. Joanna MacGregor
At an ink-stained desk, with his chin cupped in his hands, Titus was contemplating, as in a dream, the chalk-marks on the blackboard. They represented a sum in short division, but might as well have been some hieroglyphic message from a moonstruck prophet to his lost tribe a thousand years ago. Mervyn Peake
But it is strange how many rational beings believe the ultimate truths of the universe to be reducible to patterns on a blackboard. Frederick Pollock
[Dubuffet marvels at the desert as a chaotic palimpsest, filled with marks and signs].. like an immense notebook of disorganization, a notebook of improvisation.... an elementary school blackboard full of scribbles.. Jean Dubuffet
Clouds are poems, and the most moving poems linger on the blackboard so long, written in cursive so lovely, they also exist inside our fingertips. We never really erase them at the end of the lesson. Ann Beattie