gravel
US /ˈɡræv.əl/
UK /ˈɡræv.əl/

1.
a loose aggregation of small water-worn or pounded stones larger than sand but smaller than boulders, often used for paths and roads
:
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The driveway was covered with fresh gravel.
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We need more gravel for the garden path.
1.
to cover (an area) with gravel
:
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They decided to gravel the new parking area.
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The path was carefully graveled to prevent erosion.