gable

n. triangular section of wall below a pitched roof

A gable is the generally triangular portion of a wall between the lines of a sloping roof. The shape of the gable and how it is detailed depends on the structural system being used (which is often related to climate and availability of materials) and aesthetic concerns. Thus the type of roof enclosing the volume dictates the shape of the gable.
See more at Wikipedia.org...

Noun
1. United States film actor (1901-1960)
(synonym) Clark Gable, William Clark Gable
(hypernym) actor, histrion, player, thespian, role player

Noun
1. the vertical triangular wall between the sloping ends of gable roof
(synonym) gable end, gable wall
(hypernym) wall
(hyponym) bell gable

v. bifurcate, divide into two; fork, branch out, split, separate, divide; pierce or lift with a fork

n. gable, triangular section of wall below a pitched roof