The Collaborative International Dictionary of English v.0.48:
Gable \Ga"ble\, n. [OE. gable, gabil, F. gable, fr. LL. gabalum
front of a building, prob. of German or Scand. origin; cf.
OHG. gibil, G. giebel gable, Icel. gafl, Goth. gibla
pinnacle; perh. akin to Gr. ? head, and E. cephalic, or to G.
gabel fork, AS. geafl, E. gaffle, L. gabalus a kind of
(a) The vertical triangular portion of the end of a building,
from the level of the cornice or eaves to the ridge of
the roof. Also, a similar end when not triangular in
shape, as of a gambrel roof and the like. Hence:
(b) The end wall of a building, as distinguished from the
front or rear side.
(c) A decorative member having the shape of a triangular
gable, such as that above a Gothic arch in a doorway.
Bell gable. See under Bell.
Gable roof, a double sloping roof which forms a gable at
Gable wall. Same as Gable
Gable window, a window in a gable.