multiborough en · ADJ
Etymology
From multi- + borough.
Meanings
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(not-comparable) Of or pertaining to more than one borough.
Mr. Bloomberg’s sales pitch was not confined to the new governor; he also took a hard-sell approach on a soggy multiborough tour to promote the plan.
2008 March 20, Diane Cardwell, “Governor Is Another Obstacle for the Mayor’s Congestion Pricing Plan”, in New York Times: