adjective
also al·le·gha·ny or al·le·ga·ny |alə|gānē, -ni also -|gen-
Usage: usually capitalized
Etymology: from Allegheny, Allegheny mts., ranges of the Appalachian system in eastern United States
1. : of or relating to the Allegheny mountains or the region where they are situated
2. : relating to or included in a subdivision of the Pennsylvanian coal measures