The Collaborative International Dictionary of English v.0.48:

gabled \gabled\ adj.
   furnished or constructed with a gable; -- of a house or roof;
   as, a gabled roof. Opposite of ungabled.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

gabled
    adj 1: (of a roof) constructed with a single slope on each side
           of the ridge supported at the end by a gable or vertical
           triangular portion of an end wall; "a gabled roof" [ant:
           hipped]