an aperture, as in a protective wall or the side of a ship, through which a gun can be aimed and fired.
Origin of gunport
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for gunport
Historical Examples of gunport
Cooper had assigned himself to a gunport in the east wall of the blockhouse.
A rifle went off—Tom, at the gunport to the left of the front door.