1. • noun - the original amount of a debt on which interest is calculated
   • noun - the educator who has executive authority for a school
   • noun - an actor who plays a principal role
   • 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
   • adj - most important element
2. • First, highest, or foremost in importance, rank, worth, or degree; chief.
   • Of, relating to, or being financial principal, or a principal in a financial transaction.
   • One who holds a position of presiding rank, especially the head of an elementary school or high school.
   • A main participant in a situation.
   • A person having a leading or starring role.
   • The capital or main body of an estate or a financial holding as distinguished from the interest or revenue from it.
   • A sum of money owed as a debt, upon which interest is calculated.
   • Law.
   • A person who empowers another to act as his or her representative.
   • The person having prime responsibility for an obligation as distinguished from one who acts as surety or as an endorser.
   • One who commits or is an accomplice to a crime.
   • As an adjective it has the sense of “chief” or “leading.

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