Allegheny

Allegheny

[al-i-gey-nee]
noun
a river flowing NW from Pennsylvania into SW New York and then S through W Pennsylvania, joining the Monongahela at Pittsburgh to form the Ohio River. 325 miles (525 km) long.

Alleghenian, Alleghanian, adjective
trans-Alleghenian, adjective
Dictionary.com Unabridged

Allegheny Mountains

plural noun
a mountain range in Pennsylvania, Maryland, West Virginia, and Virginia: a part of the Appalachian Mountains.
Also called Alleghenies.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
Allegheny Mountains or Alleghenies (ˌælɪˈɡeɪnɪ)
 
pl n
a mountain range in Pennsylvania, Maryland, Virginia, and West Virginia: part of the Appalachian system; rising from 600 m (2000 ft) to over 1440 m (4800 ft)
 
Alleghenies or Alleghenies
 
pl n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Cultural Dictionary
Allegheny Mountains [(al-uh-gay-nee)]

Western part of the Appalachian Mountains, extending from northern Pennsylvania southwest to southwestern Virginia.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

allegheny

county, southwestern Pennsylvania, U.S., consisting of a hilly region on the Allegheny Plateau bounded to the southeast by the Monongahela and Youghiogheny rivers and to the northeast by the Allegheny River. The Ohio, Allegheny, and Monongahela rivers converge in the centre of the county to form an area known as the Golden Triangle; this was a strategic point of contention between the French and the English, who fortified the area with Fort Duquesne (1754) and Fort Pitt (1761), respectively. With the defeat of Pontiac's warriors (1763), the area opened up to settlers who founded Pittsburgh (1764), which became the county seat when Allegheny county was formed in 1788. The county's name is derived from the Delaware Indian word oolikhanna, meaning "good river." The Triangle is now Pittsburgh's central business district and the location of the popular Point State Park

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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