Definition of shelf :
1. A flat tablet or ledge of any material set horizontally at a distance from the floor, to hold objects of use or ornament.
2. A piece of timber running the whole length of a vessel inside the timberheads.
3. A sand bank in the sea, or a rock, or ledge of rocks, rendering the water shallow, and dangerous to ships.
4. A stratum lying in a very even manner; a flat, projecting layer of rock.
cupboard (part of speech: noun)
container (part of speech: noun)
suitcase, container, bladder, pouch, ladle, locker, drum, bottle, bucket, tray, holder, sack, crate, bowl, stomach, vault, box, trunk, wallet, receptacle, cup, purse, bin, tank, can, cabinet, chest, storage, flask, belly, jar, repository, reservoir, pot, pocket, cupboard, drawer, decanter, bag, closet, barrel, case, jug, vat, basket, cask
shelf (part of speech: noun)
- Gradually they ascended, for they were among the mountains, till they reached a narrow ledge or shelf scarcely wider than the stage. - "Andy Grant's Pluck", Horatio Alger.
- When not in use, stand on end on a shelf. - "The Complete Home", Various.
- On the top shelf was all that remained of the tea- service he had presented to his " intended" when he was still at the head of the Gilmerton " yard"- she being at the time lady's- maid at Dalkeith Palace and high in favour with " her Grace." - "The Dew of Their Youth", S. R. Crockett.