Harlem River definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
tidal river separating Manhattan Island from the Bronx &, with Spuyten Duyvil Creek, connecting the East River with the Hudson: c. 8 mi (12.9 km)
Harlem River definition by American Heritage Dictionary
A channel in New York City separating the northern end of Manhattan Island from the Bronx. With Spuyten Duyvil Creek it connects the Hudson and East rivers.