Main Entry: em·bra·sure

Pronunciation: \im-ˈbrā-zhər\

Function: noun

Etymology: French, from obsolete embraser to widen an opening

Date: 1702

1 : an opening with sides flaring outward in a wall or parapet of a fortification usually for allowing the firing of cannon
2 : a recess of a door or window

[embrasure illustration]