Shelf

Webster's Dictionary of the English Language

·vi A stratum lying in a very even manner; a flat, projecting layer of rock.

II. Shelf ·vi A piece of timber running the whole length of a vessel inside the timberheads.

III. Shelf ·vi A sand bank in the sea, or a rock, or ledge of rocks, rendering the water shallow, and dangerous to ships.

IV. Shelf ·vi A flat tablet or ledge of any material set horizontally at a distance from the floor, to hold objects of use or ornament.