1 definition by Jennafine

River that starts in Hopkington and dumps out into Boston Harbor, seperating Boston and Cambridge. If you go to the Charles, you will likly see some smuck floating around, maybe a few condoms and dead birds as well. People row on it when its now winter and completely frozen over. It is famous for the Head of the Charles, a huge rowing regatta with tons of teams.

It is incredibly filthy, but I have swam in it and I am still alive today.
Son: Mommy, I touched the water in the Charles River with my finger.
Mom: Oh no, let's go to the hospital.
by Jennafine December 21, 2006
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