1. It came from the Infamous Rapper Mac Dre from Vallejo, California. It means a bitch formely used for women.
2. Usually used instead of the word bitch, and often associated wit the word punk rock. Originated from Mac Dre from da bay.
3. A common replacement for the word, "bitch". Used a lot in the Bay Area of California.
http://www.urbandictionary.com/define.php?term =Beezy
It is also a female personal name.
http://en.wikipedia.org/wiki/Beezy_Bailey
Similar words are Beeze and Beezee.
Beeze:
A word that can replace any other word ever invented. Beeze is commonly substiuted for words you would not want others to hear.
http://www.urbandictionary.com/define.php?term =beeze
Beezee:
A white person on the brink of getting shot.
http://www.urbandictionary.com/define.php?term =Beezee