PRINCIPAL
—adjective. 1 (usually. Attrib.) First in rank or importance; chief. 2 main, leading. —none. 1 chief person. 2 head of some schools, colleges, and universities. 3 leading performer in a concert, play, etc. 4 capital sum as distinct from interest or income. 5 person for whom another is agent etc. 6 civil servant of the grade below secretary. 7 person directly responsible for a crime. ? principally adverb. [latin: related to *prince]