passageway

From passage +‎ way.

passageway (plural passageways)

1. A covered walkway, between rooms or buildings.
   • 1994, Stephen Fry, chapter 2, in The Hippopotamus:

     The door of the twins' room opposite was open; a twenty-watt night-light threw a weak yellow glow into the passageway. David could hear the twins breathing in time with each other.

2. Any way for passing in, out or through something.
   • 1960 November, “New electric multiple-units for British Railways: Glasgow Suburban”, in Trains Illustrated, page 660:

     The units have transverse seats, two and three astride the passageway with single or double longitudinal seats alongside the two entrance vestibules in each car.