Ruca and vieja are used indisctinctevely to refer to either old women or spouses, whereas muchachita refers to a young woman
Aug 05, 2010 Rating
girl, old lady etc... by: Anonymous
ruca is girl, my girl or girlfriend. You hear a lot of men refer to their women in Southern
California as "mi ruca". Muchachita is a young girl and vieja is an old woman. Vieja is used amongst many Southern Californian hispanics as slang for "my woman" or "my wife".