#slab  block consisting of a thick piece of something
  supertype:  #block  a solid piece of something (usually having flat rectangular sides); "the pyramids were built with large stone blocks"
  subtype:  #butcher_board__butcherboard__butcher_block__butcherblock  a thick wooden slab formed by bonding together thick laminated strips of unpainted hardwood
  subtype:  #tablet  a slab of stone or wood suitable for bearing an inscription
     subtype:  #abacus.tablet  a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave
     subtype:  #slate  (formerly) a writing tablet made of slate
  subtype:  #tile  a flat thin rectangular slab (as of fired clay or rubber or linoleum) used to cover surfaces
     subtype:  #tessera  a small square tile of stone or glass used in making mosaics
        subtype:  #tessella  a small tessera

No statement uses or specializes #slab; click here to add one.