porthole
Sign in to saveAlso known as sidescuttle, side scuttle, bull's-eye window, bull's-eye
thumb|right|Jewish refugees look out through a porthole of a ship while docked in the port of Haifa, 1950–1959
~6 min read
Encyclopedic overview
6 sectionsContents
- Etymology
- Structure
- Spacecraft portholes
- Submarine portholes
- See also
- References
thumb|right|Jewish refugees look out through a porthole of a ship while docked in the port of Haifa, 1950–1959
A porthole, sometimes called '''bull's-eye window or bull's-eye, is a generally circular window used on the hull of ships to admit light and air. Though the term is of maritime origin, it is also used to describe round windows on armored vehicles, aircraft, automobiles (the Ford Thunderbird is a notable example) and even spacecraft.
Excerpted from Wikipedia’s “porthole” article, available under the CC BY-SA 4.0 licence.