The Collaborative International Dictionary
Shelf \Shelf\, n.; pl. Shelves. [OE. shelfe, schelfe, AS. scylfe; akin to G. schelfe, Icel. skj[=a]lf. In senses 2 & 3, perhaps a different word (cf. Shelve, v. i.).]
(Arch.) A flat tablet or ledge of any material set horizontally at a distance from the floor, to hold objects of use or ornament.
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A sand bank in the sea, or a rock, or ledge of rocks, rendering the water shallow, and dangerous to ships.
On the tawny sands and shelves.
--Milton.On the secret shelves with fury cast.
--Dryden. (Mining) A stratum lying in a very even manner; a flat, projecting layer of rock.
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(Naut.) A piece of timber running the whole length of a vessel inside the timberheads.
--D. Kemp.To lay on the shelf, to lay aside as unnecessary or useless; to dismiss; to discard.