Shelf
Emergence definition
Shelves are horizontal structures made of wood that hold objects above the ground.
Wiktionary senses
Historical origin
Prerequisite chain
Neighborhood
In other languages
- shelf English primary
Prerequisites
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Shelves use the principle of support to hold objects above the ground
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Flat horizontal surface for storage -- understanding structure is a prerequisite
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Understanding form helps understand the structure of shelf
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Flat horizontal surface for storage -- understanding wood is a prerequisite