embrasure

Noun

Meaning

An embrace.

A splay of a door or window.

An aperture with slant sides in a wall or parapet, through which cannon are pointed and discharged; a crenelle. See Illust. of Casemate.

Source: Webster's dictionary

porthole port bay nook casement depression dent opening angle hole reveal niche socket ambush doorway

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hill galaxy mountain last increase headland

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opening