1. [1960s+] (orig. US black/campus) used to describe an attractive woman.
2. [1990s+] (also phat-ass, phatman sweet) a general term of approval, admiration; also in phrs., e.g. phat 2 death.
[1990s+] (US campus) a very fashionable person.
[1990s+] (US black) a wealthy person; also attrib.
[1990s+] (US black teen) an exceptionally good mix tape.