The Collaborative International Dictionary
Curb roof
Curb roof \Curb" roof`\ (r??f`). A roof having a double slope, or composed, on each side, of two parts which have unequal inclination; a gambrel roof.
Wiktionary
curb roof
n. A gambrel roof.
WordNet
curb roof
n. a roof with two or more slopes on each side of the ridge
Usage examples of "curb roof".
The moon was high when they reached what might have been the end of the world: a steep curb roof, slanting down almost vertically to a curious, wide ledge nearly twenty feet below.