Pronunciation: (pu-tō'muk), [key]
1. a river flowing SE from the Allegheny Mountains in West Virginia, along the boundary between Maryland and Virginia to the Chesapeake Bay. 287 mi. (460 km) long.
2. a city in central Maryland, near Washington, D.C. 40,402.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.