Correct spelling for the English word "arsk" is [ˈɑːsk], [ˈɑːsk], [ˈɑː_s_k] (IPA phonetic alphabet).
The word "arsk" is a colloquial term primarily used in certain dialects of British English, specifically in Northern England and Scotland. It is derived from the Old Norse word "erusk" or "arrsk" which means "buttocks" or "backside". The word likely entered the English language through Scandinavian influence during the Viking Age, but its usage has evolved over time to become a slang term for "arse" or "ass" in modern English.