Sen″ior, n. 1. A person who is older than another; one more advanced in life.
2. One older in office, or whose entrance upon office was anterior to that of another; one prior in grade.
3. An aged person; an older. Dryden.
Each village senior paused to scan,
And speak the lovely caravan. Emerson.
4. One in the fourth or final year of his collegiate course at an American college; — originally called senior sophister; also, one in the last year of the course at a professional schools or at a seminary.