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Slab

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slab

1. A thin piece of anything, especially of marble or other stone, having plane surfaces.

2. An outside piece taken from a log or timber in sawing it into boards, planks, etc.

3. (Science: zoology) The wry neck.

4. The slack part of a sail. Slab line, a line or small rope by which seamen haul up the foot of the mainsail or foresail.

Origin: OE. Slabbe, of uncertain origin; perhaps originally meaning, a smooth piece, and akin to slape, Icel. Sleipr slippery, and E. Slip, v. I.