principal
noun.
the original amount of a debt on which interest is calculated
noun.
the educator who has executive authority for a school
she sent unruly pupils to see the principal
noun.
an actor who plays a principal role
Synonym: lead, star
noun.
capital as contrasted with the income derived from it
noun.
(criminal law) any person involved in a criminal offense, regardless of whether the person profits from such involvement
noun.
the major party to a financial transaction at a stock exchange; buys and sells for his own account
Synonym: dealer
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
Synonym: chief, main, master, primary