Emily Dickinson Lexicon

SLAB, n. [W. llab, yslab, a thin strip.]

1. A plane or table of stone; as, a marble slab.
2. An outside piece taken from timber in sawing it into boards, planks, &c.
3. A puddle. [See Slop.] – Evelyn. Slabs of tin, the lesser masses which the workers cast the metal into. These are run into molds of stone.