A hatch in the hull of a ship through which a cannon is fired.(noun)
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Use "gunport" in a sentence
"The five executioners, certified police officers who volunteered for the task and remain anonymous, stood about 25 feet away, behind a wall cut with a gunport, and were armed with matching. 30-caliber Winchester rifles."
"And though Monk dared not look out the gunport while disgraced, he thought he knew the reason for this surprising outburst."
"One man was seen trying to escape from a gunport and was swept back inside by the power of the water."