a small building with its roof leaning against the side of a large building, wall or fence （搭在高大建筑物、墙壁或栅栏上建的）单坡屋顶小房，披屋，披棚 a lean-to garage 单坡屋顶车库 We keep hens in a lean-to at the back of the house. 我们把母鸡放在房子后面的靠墙里。
Oxford Collocations DictionaryLean-to is used before these nouns:- shed