principal

Noun
  1. The original amount of a debt on which interest is calculated (synset 113421835)
  2. The educator who has executive authority for a school (synset 110494230)
    "she sent unruly pupils to see the principal"
  3. An actor who plays a principal role (synset 110668135)
  4. Capital as contrasted with the income derived from it (synset 113376883)
  5. (criminal law) any person involved in a criminal offense, regardless of whether the person profits from such involvement (synset 110494535)
  6. The major party to a financial transaction at a stock exchange;
    Buys and sells for his own account (synset 110494031)
Adjective
  1. Most important element (synset 301280536)
    "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"

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