chief

a person who is in charge; "the head of the whole operation"

a person who exercises control over workers; "if you want to leave early you have to ask the foreman"

the head of a tribe or clan

most important element; "the chief aim of living"; "the main doors were of solid glass"; "the principal rivers of America"; "the principal example"; "policemen were primary targets"; "the master bedroom"; "a master switch"