資料來源 : Webster's Revised Unabridged Dictionary (1913)

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.

資料來源 : WordNet®

curb roof
     n : a roof with two or more slopes on each side of the ridge