Noun(1) air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time(2) air passage provided by a retractable device containing intake and exhaust pipes(3) permits a submarine to stay submerged for extended periods of time
Noun(1) air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time(2) air passage provided by a retractable device containing intake and exhaust pipes(3) permits a submarine to stay submerged for extended periods of time