Stern port

(Naut.) a port, or opening, in the stern of a ship.

See also: Stern

References in classic literature ?
But the four stern ports of her cabin, glazed with six little greenish panes each, and framed in wooden sashes painted brown, might have been the windows of a cottage in the country.
He entered the unoccupied stern cabin and spent some time there unscrewing the two stern ports.