1. The western part of the Appalachian Mountains; extending from northern Pennsylvania to southwestern Virginia
   - Allegheny Mountains

1. 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 River
   - Allegheny River

Type of: chain, chain of mountains, mountain chain, mountain range, range, range of mountains, river

Part of: Appalachian Mountains, Appalachians, Empire State, Keystone State, Mountain State, New York, New York State, NY, Old Dominion, Old Dominion State, PA, Pennsylvania, VA, Virginia, West Virginia, WV

Encyclopedia: Alleghenies

• thebaine
• Theban
• thebe
• Thebes
• theca
• thecodont
• thecodont reptile
• Thecodontia
• thee
• theelin
• theft
• thegn
• Theia
• their
• theirs
• theism
• theist
• theistic
• theistical
• thelarche
• Thelephoraceae
• Thelonious Monk
• Thelonious Sphere Monk
• Thelypteridaceae
• Thelypteris