Ghor-zanvui is the lucky man who for whatever reason inherits his parents-in-law’s house and thereby makes it his own. Most often it is because his wife is the only child of her parents. Or it may be that she does have a brother who is either an idiot or a priest. But whatever may be the reason for the inheritance, one cannot earn the appellation ghor-zanvui unless he is also humble enough to make that his permanent abode!
As you can see, ghor-zanvui or ghorzanvui is a compounded word in which ghor means house while zanvui means son-in-law. So ghorzanvui is a son-in-law who lives in the house that belongs or belonged to his parents-in-law.
For some reason, however, the word ghorzanvui has acquired a very slightly pejorative connotation by being associated with a mild degree of laziness, as a person who doesn’t need to do any work because he has all the goodies thrown into his lap.