Examples from the Web for interborough
This platform used to be part of the Interborough Rapid Transit, or IRT.
Those who go by the Interborough tube will probably find that changed conditions have rendered many of these rules obsolete.
An hour and a half every day for more than twenty years he had spent in the great underground system of the Interborough.
Down he hurried into the subway station, and dropped his tithe of tribute into the multiple maw of the Interborough.
But apparently, too, there must be life along the uptown route of the Interborough.