principal -- (the original amount of a debt on which interest is calculated)
principal, school principal, head teacher, head -- (the educator who has executive authority for a school; "she sent unruly pupils to see the principal")
star, principal, lead -- (an actor who plays a principal role)
principal, corpus, principal sum -- (capital as contrasted with the income derived from it)
principal -- ((criminal law) any person involved in a criminal offense, regardless of whether the person profits from such involvement)
principal, dealer -- (the major party to a financial transaction at a stock exchange; buys and sells for his own account)
Overview of adj principal
The adj principal has 1 sense
chief, main, primary, principal, master -- (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")