What does the word slab mean?

Usage examples for slab

  1. If we can only scratch the earth- bed away from under, the slab might drop a little. – The Voyages of Doctor Dolittle by Hugh Lofting
  2. I left it on the marble slab in the wash room and when I came back for it not three minutes later it was gone. – Molly Brown's Junior Days by Nell Speed
  3. One night, when I come in from Mrs. Eichorn's, what did I see on the floor but a sure- 'nough tombstun- slab, an' spelt out in little blue tiles down the middle was: 'Pa. – Mrs. Wiggs of the Cabbage Patch by Alice Caldwell Hegan
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