lean-to
noun [ C ] uk/ˈliːn.tuː/ us/ˈliːn.tuː/
（依附在大建筑侧面的）小屋，偏房，侧房
a building joined to one of the sides of a larger building with which it shares one wall
a house with a lean-to garage 带车库的别墅
US（供宿营用的）斜顶简易房
a shelter or simple building with a roof that slopes in one direction, used for sleeping in outside