In this case, I am referring to it's use in slang. It can be spelt "heffer" or "heffa." This word is used most often in AA[E]V (African American [English] Vernacular) and is used to insult someone. In general it means "bitch" but can apply particularly to someone who is fat. Example: Ooooh that heffa, she don't even know what comin! (That bitch doesn't even know what's coming [her way]!) I can't think of a word in French that matches the register or meaning. Perhaps "Quelle grosse salope! Ell se mem pa …" ?