A white person who acts like a blackgangster or from the ghetto, but the word can be offensive to a black person also, because when you said wigger its just like saying the word nigger, wigger means white nigger.
The first wiggas were people like Bob Dylan, Eric Clapton and Stephen Stills, who made alot of money promoting the social diseases of the ghetto....drugs, divorce, alcoholism, irresponsibility, and after popularizing all of the above, and helping make the world into the ghetto it is today, went into rehab, forsook ghettoisms, got married, and continued making lots of money singing the "blues."