Noun

1. A passageway through which to enter or leave, such as one between seating areas in an auditorium, or between two buildings.
2. A temporary bridge, especially one from a ship.
3. A temporary passageway, such as one made of planks.
4. A clear path through a crowd or a passageway with people.
   • 1981, P. L. Travers, Mary Poppins, revised edition, chapter 10,

     And he pushed his way through the crowd crying, "Gangway, gangway!" and dragging Jane and Michael after him.

5. An aisle.
6. A passage along either side of a ship's upper deck.
7. A passage through the side of a ship or though a railing through which the ship may be boarded.