Slab

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

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.