How do you spell Slab

Available Definitions:
1)  n. - A thin piece of anything, especially of marble or other stone, having plane surfaces.
2)  n. - An outside piece taken from a log or timber in sawing it into boards, planks, etc.
3)  n. - The wryneck.
4)  n. - The slack part of a sail.
5)  a. - Thick; viscous.
6)  n. - That which is slimy or viscous; moist earth; mud; also, a puddle.