Ledge

1. n. A piece of timber to support the deck, placed athwartship between beams.
2. n. A shelf on which articles may be laid; also, that which resembles such a shelf in form or use, as a projecting ridge or part, or a molding or edge in joinery.
3. n. A shelf, ridge, or reef, of rocks.
4. n. A layer or stratum.
5. n. A lode; a limited mass of rock bearing valuable mineral.

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.