Definitions

1. noun

the most important or highest-ranking person in a school, business, or organization.

“The principal of the school greeted the parents at the assembly.”

2. noun

a main or primary source of something.

“The principal source of water for the city was contaminated, causing an emergency.”

3. adjective

most important or highest in rank.

“The principal role in the play was given to a talented young actor.”

4. verb

to make a principal or main payment or repayment, especially of a debt.

“She principal-ed the loan by paying off the majority of the debt.”

5. verb

to be the principal or main thing.

“The new policy principal-ed the company’s shift in direction.”