1.synonym for "cool girl" or anything along those lines.
Origin: Steezy= cool, awesome, etc; Beezy= bitch (but in this case a good form of the word) or also, girl, woman, etc.
2. A psycho or crazy and ultimately bitch of a woman.
Her wakeboarding skills qualified her as the steezy beezy of the lake.
That steezy beezy tried to fucking kill me!