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Meaning of interborough

in•ter•bor•ough

Pronunciation: (in'tur-bûr"ō, -bur"ō), [key]
— adj.
  1. between boroughs.
  2. of, pertaining to, or located in two or more boroughs.
—n.
  1. a transportation system operating between boroughs.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.