Breastsummer
Pronunciation : Breast"sum`mer
Part of Speech : n.
Definition : Defn: A summer or girder extending across a building flush with, and supporting, the upper part of a front or external wall; a long lintel; a girder; -- used principally above shop windows. [Written also brestsummer and bressummer.]
(Arch.)
Source : Webster's Unabridged Dictionary, 1913