Wiktionary
a. Between buildings.
Usage examples of "interbuilding".
There was a normal walk through door with a small window in it just to the right of the interbuilding aperture.
They stood together in a group, watching the belt slowly carry the boxes through the interbuilding aperture.
He got up on the motionless belt and scuttled into the safety cage, dragging the two bags, until he reached the steel bat-wing doors of the interbuilding aperture.
Shortly, he was aboard a thermosealed interbuilding commute car, on his way to downtown New York City and P.
Lesser breeds had to paddle for it in the scummy, brackish canals of Times Square, Wall Street, Rockefeller Center, and other unimportant places, fending off lumps of offal and each other as best they could, or jamming over the interbuilding bridges, or trying to flag down an occasional blimp.