1. retaining wallEngineering term
Wikipedia definition
2. Retaining wallRetaining walls are built in order to hold back earth which would otherwise move downwards. Their purpose is to stabilize slopes and provide useful areas at different elevations, e.g. terraces for agriculture, buildings, roads and railways.
Read “Retaining wall” on English Wikipedia
Read “擁壁” on Japanese Wikipedia
Read “Retaining wall” on DBpedia


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