Nickname for a small hamlet formally named Stillwater located in Upstate NY on the Hudson River. The term is officially credited to Matty P for its creation.
Nobody knows how to party like them Illwater boys and girls
by b-rad C January 08, 2008
Slang for Clearwater, Florida, 1/3 of the Tampa Bay area.
"I'm from Illwater."
by Midas M. April 09, 2008