A shelter with a sloped roof; also a building with a similar construction attached to the side of a building as an extension
“The only other alternative was to lodge her in the little modern lean-to, which I have already described as being tacked on to the side of the old building.”.
A structure dependent upon another structure for partial support and having only one slope or pitch
A lean-to is a building such as a shed or garage which is attached to one wall of a larger building, and which usually has a sloping roof. a small roughly-made building that is built against the side of a larger building