shelf

US /ʃelf/
UK /ʃelf/
"shelf" picture
1.

a flat length of wood or other rigid material, attached to a wall or forming part of a unit, used for displaying or storing objects

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She placed the book on the top shelf.
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The kitchen has many open shelves for dishes.
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rackledgetiermantelpiecebracket
2.

a submerged ridge of rock, sand, or coral near the surface of the water

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The boat ran aground on a hidden rock shelf.
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Divers explored the coral shelf teeming with marine life.
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reefbankledgeshoal
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on the shelffloating shelfshelf spaceshelf life