Embrasure (noun)
im-bray-jur
An opening in a wall or parapet which is bevelled or splayed out on the inside, typically one around a window or door.
Early 18th century from French, from obsolete embraser (earlier form of ébraser) ‘widen a door or window opening’, of unknown ultimate origin.
Example sentences
“The splayed embrasures giving away the age of the house.”