Longman Dictionary of Contemporary English
Wiktionary
n. A door that is opened by either pushing or pulling from either side (i.e. opens both ways) and is not normally capable of being locked.
WordNet
n. a door that swings on a double hinge; opens in either direction [syn: swinging door]
Wikipedia
Swing Door trains, commonly known as "Dogboxes" or "Doggies", were wooden-bodied electric multiple unit (EMU) trains that operated on the suburban railway network of Melbourne, Victoria, Australia.
Swing Door cars had outward-opening doors. They were reasonably narrow, to ensure that two passing trains could not foul each other if doors were accidentally left open. At certain locations clearances were tight and there are stories of Swing Door cars losing doors that were not closed. The fleet could be seen running in any arrangement, from one car (using a double-ended M car), up to eight cars.
Usage examples of "swing door".
He followed it and pushed through a swing door at the end and found himself in a long high room with a skylight in the roof and cabins along the walls.
The swing door to the other room opens, and a trim little woman with shoulder-length blond hair comes through.
This one came in quickly, the way a wise cat goes through a swing door.
The girl stood up and went very quickly through the arch and through a swing door into the kitchen.
Edna, a dark-haired chubby woman, bustled into the living room from the swing door to the large kitchen.
Finally he heard a door opena swing door, he thoughtand a final shove sent him forward through it just as the cloth was pulled away from his face.
Ricci started toward a tall swing door at the far end of the room, leading his men down the aisle between a long cutting counter and a solid row of ovens, grills, and ranges.
Then he caught sight of his reflection in the murky glass of the swing door.