An outside cabin
A porthole is the 'window ' in a ship's cabin, usually round and with a very tough sealable window cover.
In the industry, a cabin with a porthole is referred to as an "outside" or "oceanview". The cabins on higher decks often replace the portal with a "picture window" to improve the asthetics of the vessel's exterior.
Porthole
* porthole
It's called a "porthole."
The round windows in staterooms or cabins on board ships are called port holes. These round windows would be kept closed when the ship is at sea, but could be opened when the ship is at anchor or docked in port.
Porthole catfish was created in 1872.
The porthole is broken! A bird just flew right through the broken porthole! The glass on the floor came from that broken porthole.
He fired a cannon through the porthole
That would be a porthole, mate.
The correct term for an airplane window is a porthole, the same as for a window on the side of a ship.
A round window in the hull (originally any opening in the hull) is called a porthole. A window in the superstructure is a window.