EMBRASU'RE, noun s as z. 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.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI