Definition of "embrasure" [em•bra•sure]

• An opening in a thick wall for a door or window, especially one with sides angled so that the opening is larger on the inside of the wall than on the outside. (noun)
• A flared opening for a gun in a wall or parapet. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "May I suggest that you might want to use the term embrasure correctly?"
• "Upon these, and along the walls, which in most castles were topped by a parapet and a kind of embrasure called crennels, the defenders of the castle were stationed during a siege, and from thence discharged arrows, darts, stones, and every kind of annoyance they could procure, upon their enemies."
• "Terrence and Aaron lolled into a cushioned embrasure of a window seat, sufficiently near to each other to nudge the points of their respective contentions as"