What does the word slate mean?

Usage examples for slate

  1. For me, for you, for all, to close the date, Pass now the ev'ning sponge across the slate; And to that spirit of forgiveness keep Which is the parent and the child of sleep. – New-Poems by Stevenson, Robert Louis
  2. The father takes the slate in his hand and reads the words: Find the G. C. M. " Good heavens!" – A Dominie in Doubt by A. S. Neill
  3. We warn't teached nothin', not even religion an' we got whupped if we wuz ketched wid a piece uv paper or a slate. – Slave Narratives: a Folk History of Slavery in the United States From Interviews with Former Slaves, North Carolina Narratives, Part 2 by Work Projects Administration