porthole

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porthole

a small aperture in the side of a vessel to admit light and air, usually fitted with a watertight glass or metal cover, or both

Porthole

A small window, usually circular, in a ship’s side, or on an exterior part of a structure.

Porthole

 

a glass window in the hull or superstructure of a vessel for illuminating and ventilating interior spaces. Ship portholes may be round (side portholes and deck-cabin portholes) or rectangular (deck-cabin portholes) and may be deadlights or of the opening type, often with waterproof covers. Selection of the type of porthole is determined by the place where it is to be installed and the distance to the waterline. The round windows of underwater research vessels, airplanes, helicopters, and spaceships are also called portholes.

porthole

[′port‚hōl]
(design engineering)
The opening or passageway connecting the inside of a bit or core barrel to the outside and through which the circulating medium is discharged.
(engineering)
A circular opening in the side of a ship or airplane, usually serving as a window and containing one or more panes of glass.

access door

access door
A door, usually small, which is provided through a finished construction, as into a duct, through a ceiling, behind a wall, in a large piece of mechanical equipment, etc.; used to provide a means of inspection of equipment or services housed within.
References in periodicals archive ?
He walks around and looks through the opposite porthole.
The portholes are made from paper plates, with goldfish crackers glued on to resemble swimming fish.
Pupils Lee Cluley (left) and Barke Ali look through a porthole.
Outer louvers direct breezes, and along with the shiny beige exterior and the blue-tinted portholes, also deflect sunlight.
It had a self-sustaining atmosphere, portholes, and lights, and was powered by steam.
Besides the occasional glimmer of luminescent (glowing) sea creatures splashing against Alvin's portholes, there was no life to be seen.
The apartment now includes a space-age kitchen, windows shaped to look like portholes, and even a brig.
The renovated ship is a 365-room resort hotel, its romantic first-class- only staterooms splendidly adorned in classic Art Deco style, with original artwork, rich wood paneling and portholes that provide panoramic views of the Long Beach coastline.
Buick's flagship, the 2003 Park Avenues[R] Ultra, with an aggressive stance, an abundance of chrome and leather appointments, and a classic Buick signature -- chrome-plated portholes
Portholes -- first called "VentiPorts" -- are design icons strongly associated with Buick since their introduction in 1949.
The hat even had little portholes all round it and the words "Marryshow Corporation: Black Star Line II" etched into a flat blade of dried vine in its side.
I ran to the portholes and I saw the whole container ship coming towards me.