say it: PRIN-suh-puhl
principal is a noun and adjective meaning "the original amount of a debt on which interest is calculated". It carries 7 recorded senses.
the educator who has executive authority for a school
“she sent unruly pupils to see the principal”
capital as contrasted with the income derived from it
the major party to a financial transaction at a stock exchange; buys and sells for his own account
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for principal come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.