How to Say "retaining wall" in Spanish
The Spanish word for “retaining wall” is “muro” — A1 level. This is a very common word in everyday Spanish.
English → SpanishA1
nounA1
engineering/construction

Examples
El muro del jardín es muy alto y de piedra.
The garden wall is very high and made of stone.
Tuvieron que construir un muro de contención para evitar el deslizamiento de tierra.
They had to build a retaining wall to prevent the landslide.
Gender Reminder
Remember that 'muro' is a masculine noun, so use 'el' (the) and masculine adjectives with it: 'el muro blanco' (the white wall).
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