Senior \Sen"ior\, n.
   1. A person who is older than another; one more advanced in
      life.
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   2. One older in office, or whose entrance upon office was
      anterior to that of another; one prior in grade.
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   3. An aged person; an older. --Dryden.
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            Each village senior paused to scan,
            And speak the lovely caravan.         --Emerson.
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   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.
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