Longman Dictionary of Contemporary English homepage

principal

2 noun
     
Related topics: Performing, Finance, Education
principal2
1

school

[countable] American EnglishSE someone who is in charge of a school [= headteacher British English]
a small school with just three teachers and the principal
2

university/college

SE [countable] British English someone who is in charge of a university or college
3

business

[countable] American English the main person in a business or organization, who can make important business decisions and is legally responsible for them:
The principal of the business has an office in New York.
4

performer

[countable]AP the main performer in a play or in a group of musicians, dancers etc:
She later became a principal with the Royal Ballet.
5

money

[singular] technicalBF the original amount of money that is lent to someone, not including any of the interest
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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