Emily Dickinson Lexicon

EM-BRA'SURE, n. [s as z. Fr. from embraser, to widen. Lunier. If Lunier is right, this coincides with the Sp. abrasar, Port. abrazar, to burn, Sp. to squander or dissipate.]

1. An opening in a wall or parapet, through which cannon are pointed and discharged.
2. In architecture, the enlargement of the aperture of a door or window, on the inside of the wall, for giving greater play for the opening of the door or casement, or for admitting more light. Encyc.