Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun allegheny

1 sense of allegheny

Sense 1
Allegheny, Allegheny River -- (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)
       INSTANCE OF=> river -- (a large natural stream of water (larger than a creek); "the river was navigable for 50 miles")