1. river in S England, flowing from Gloucestershire east through London into the North Sea: 210 mi (338 km)
2. river in SE Ontario, Canada, flowing southwest into Lake St. Clair: 163 mi (262 km)
3. estuary in SE Conn., flowing south into Long Island Sound: 15 mi (24 km)
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'Thames'(senses 2 and 3) after the English river