A name given to a child by a parent who didn't know the traditional spelling (or chose to disregard it). For example, "Antwon" for "Antoine" or "Stefany" for "Stephanie." Most typically associated with the uneducated, but is also seen with new-agey types who decide thier kids should have a 'unique' name.
(can also be used as a verb, meaning to give a child such a name)
My dumbass cousin got knocked up at 15 and then ghetto-named her baby. She called it 'Syntheea,' because I guess she didn't know how to spell 'Cynthia.' What a ghetto name.