Allegheny
Al´le`ghe`ny
| a. | 1. | Of or pertaining to the Allegheny Mountains, or the region where they are situated. Also |
| 2. | (Geol.) Pertaining to or designating a subdivision of the Pennsylvanian coal measure. |
| Noun | 1. |  Allegheny - a river that rises in Pennsylvania and flows north into New York and then back south through Pennsylvania again to join the Monongahela River at Pittsburgh which is the beginning of the Ohio RiverSynonyms: Allegheny River |