INSTRUCT'OR, noun A teacher; a person who imparts knowledge to another by precept or information. 1 Corinthians 4:15. 1. The preceptor of a school or seminary of learning; any president, professor or tutor, whose business is to teach languages, literature or the sciences; any professional man who teaches the principles of his profession.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI