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"The word corbie or corby, though obsolete in English, except as a heraldic term, has retained its place in the Scottish dialect, and in architecture to signify the succession of steps with which the gables of old houses are everywhere ornamented in Scotland. The fashion, like most of the other peculiarities of Scottish architecture, was no doubt borrowed, as was the term, from France." — Chambers, 1881

Corbie-Steps

"The word corbie or corby, though obsolete in English, except as a heraldic term, has retained its place…