The area or space immediately behind a window, especially at the front of a shop:
A small hole or crevice through which one may look.
A becoming open or causing to be open
The definition of a port is a harbor or place on the water where ships load and unload cargo.
The definition of a hole is a hollow place, opening or break in something.
An opening (in a wall or parapet) with the sides slanting outward to increase the angle of fire of a gun
Find another word for porthole. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for porthole, like: window, peephole, opening, port, hole, port-hole, transom, skylight, louver, fanlight and plate-glass.