The two crossword solutions for the term 'BOSS, IN SLANG' are 'KAHUNA' and 'KAHONA'. The term 'Kahuna' is derived from Hawaiian culture and is used to refer to a person in a position of authority or power. It is often used to describe someone who is respected and influential in their community. The term 'Kahona' is also derived from Hawaiian culture and is used to refer to a leader or chief. Both terms are commonly used as slang to refer to someone in a position of power or authority.