Definition of 'principal'

Noun

1. the original amount of a debt on which interest is calculated
2. the educator who has executive authority for a school; "she sent unruly pupils to see the principal"
      Synonyms: school principal head teacher head
3. an actor who plays a principal role
      Synonyms: star lead
4. capital as contrasted with the income derived from it
      Synonyms: corpus principal sum
5. the major party to a financial transaction at a stock exchange; buys and sells for his own account
      Synonyms: dealer

Adjective

1. 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"
      Synonyms: chief main primary

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