WordReference Random House Unabridged Dictionary of American English © 2026
in•ter•bor•ough
(in′tər bûr′ō, -bur′ō),USA pronunciation adj.
n.
- between boroughs.
- of, pertaining to, or located in two or more boroughs.
n.
- Transporta transportation system operating between boroughs.
- inter- + borough 1900–05