Available Definitions:
1) 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.
2) n. - A shelf, ridge, or reef, of rocks.
3) n. - A layer or stratum.
4) n. - A lode; a limited mass of rock bearing valuable mineral.
5) n. - A piece of timber to support the deck, placed athwartship between beams.