D defs.my
Entry 1 sense Webster, 1913

Breastsummer

· Breast·sum·mer · IPA
01 n. 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 gir…
  1. 1.
    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.(Arch.)