retaining wall is a noun meaning "a wall that is built to resist lateral pressure (especially a wall built to prevent the advance of a mass of earth)". It carries one recorded sense.
a wall that is built to resist lateral pressure (especially a wall built to prevent the advance of a mass of earth)
Definitions, synonyms and semantic relations for retaining wall come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.