Single porthole Synonyms

Definitions for Single

(adjective) not married
(adjective) belonging only to the one person, unit, or group named
(adjective) not physically attached to another unit

SP abbreviation

SP is an abbreviation for Single Porthole

What does SP stand for?

SP stands for "Single Porthole"

Porthole replaced

single release

single channel

single window

single opening

single passage

single orifice

single escape

single loophole

single outlet

single feeling

Definitions for Porthole

(noun) a window in a ship or airplane
(noun) an opening (in a wall or ship or armored vehicle) for firing through