Meaning of principal
Definition of principal
(adj)
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"
the educator who has executive authority for a school; "she sent unruly pupils to see the principal"
(criminal law) any person involved in a criminal offense, regardless of whether the person profits from such involvement