(of persons) highest in rank or authority or office; "his arch rival"; "the boss man"; "the chief executive"; "head librarian"; "top administrators"
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"
a person who exercises control over workers; "if you want to leave early you have to ask the foreman"
a person who is in charge; "the head of the whole operation"
