Definition of "gable"

It was a queer sort of place—a gable-ended old house, one side palsied as it were, and leaning over sadly.

1851 November 14, Herman Melville, chapter 2, in Moby-Dick; or, The Whale, 1st American edition, New York, N.Y.: Harper & Brothers; London: Richard Bentley, page 10

Although there were important developments in the internal organization of Cape houses during this period, their most obvious element is the gable. End-gables were common in medieval northern European and particularly Dutch buildings, but central gables set into the long side of roofs were more unusual and became the quintessential feature of the Cape Dutch style.

2002, Tony Pinchuck, Barbara McCrea, South Africa

Qionglin Village in Kinhu with its well-preserved ancestral halls, arches, and old Fujian-style houses with interesting gables is famous for having more shrines than any other village on Kinmen.

2017 March, Piera Chen, Dinah Gardner, Lonely Planet Taiwan (Lonely Planet)‎

First, striking sail, their tacklings then they loosed.And (with their gables stoop'd) their mast imposed Into the mast-room.

1577–83, George Chapman, The Works of George Chapman. Poems and minor translations.The Hymns of Homer: A Hymn to Apollo., Chatto and Windus 1875