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1.
a slut, a ho, a female prostitute.

Also refers to someone who uses sex for special, undeserved privileges.
-"See that girl over there?"
-"Yeah."
-"She got an A in history cuz she slept with the teacher"
-"Damn, what a toozy!"
by superawesomedudeloljkimnotadic February 01, 2011
 
2.
the same as
When someone saying "im great" and you say "toozy" instead of "im great"(again).
by jameszyboy January 21, 2009