An affectionate name for "grandmother," (esp. a somewhat
cold, possibly drunk grandmother with aspirations of social standing.)
On the television show Arrested Development, Maeby Fünke and George-
Michael Bluth call their grandmother (Lucille Bluth) "Gangy" in many instances.
The etymology is unclear but it'
s frequent use in context makes the meaning clear. The spelling "Gangy" seems to be the generally-agreed upon spelling on Wikipedia, IMDB, and most
TV sites.
George
Michael Bluth: "Was that Gangy who was just… " (slips on Lucille's spilled martini and falls)
Michael Bluth: "You all right? Sorry. Your grandmother had a little accident here."
George
Michael Bluth: "Oh. Does that means she's gonna have to come live with us?"