
1) Civil engineering term 2) Revetment 3) Stone structure in a garden
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https://www.crosswordclues.com/clue/retaining-wall

Retaining walls are structures designed to restrain soil to unnatural slopes. They are used to bound soils between two different elevations often in areas of terrain possessing undesirable slopes or in areas where the landscape needs to be shaped severely and engineered for more specific purposes like hillside farming or roadway overpasses. ==Defi...
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http://en.wikipedia.org/wiki/Retaining_wall
(Revetment, Cribwall, Cribbing) Structure used at a grade change to hold the soil on the up-hill side from slumping, sliding, or falling; usually made of log or stone. Also used to provide stability and strength to the edge of a trail.
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http://www.americantrails.org/

freestanding wall that either resists some weight on one side or prevents the erosion of an embankment. It may also be `battered,` that is, inclined ... [3 related articles]
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http://www.britannica.com/eb/a-z/r/38

A wall that has been built on a slope to keep the soil from sliding or eroding. It would stabilize the area.
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http://www.encyclo.co.uk/local/20077

A wall designed to hold back, or ‘retain`, higher level ground behind it
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http://www.encyclo.co.uk/local/20695

A structure that holds back a slope and prevents erosion.
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http://www.encyclo.co.uk/local/20933

A wall built to hold back earth, either to secure a raised site, or to prevent material falling on to a site from above.
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http://www.encyclo.co.uk/local/20938

- A structure that holds back a slope and prevents erosion.
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http://www.homebuildingmanual.com/Glossary.htm

In architecture the term retaining wall refers to a wall built to keep any movable backing, or a bank of sand or earth, in its place.
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http://www.probertencyclopaedia.com/browse/TR.HTM

[
n] - a wall that is built to resist lateral pressure (especially a wall built to prevent the advance of a mass of earth)
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http://www.webdictionary.co.uk/definition.php?query=retaining%20wall

A wall designed to hold back (retain) higher level ground behind it.
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https://www.encyclo.co.uk/local/20694
noun a wall that is built to resist lateral pressure (especially a wall built to prevent the advance of a mass of earth)
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https://www.encyclo.co.uk/local/20974

A wall designed to resist the lateral displacement of soil, water, or any other type of material.
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https://www.encyclo.co.uk/local/21107

A structure that holds back a slope and prevents erosion.
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https://www.encyclo.co.uk/local/22400

A barrier created with stones, timbers or boards to prevent the erosion of soil on steep slopes.
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https://www.encyclo.co.uk/local/22486

A wall that has been built on a slope to keep the soil from sliding or eroding. It will stabilize the area.
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https://www.encyclo.co.uk/local/22488

A structure that holds back a slope and prevents erosion.
Found on
https://www.homebuildingmanual.com/Glossary.htm

A barrier created with stones, timbers or boards to prevent the erosion of soil on steep slopes.
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https://www.lowes.com/projects/lawn-and-garden/garden-glossary/project
No exact match found.