1. [adv]  at the time or occasion immediately following; "next the doctor examined his back"
2. [adj]  immediately following in time or order; "the following day"; "next in line"; "the next president"; "the next item on the list"
3. [adj]  nearest in space or position; immediately adjoining without intervening space; "had adjacent rooms"; "in the next room"; "the person sitting next to me"; "our rooms were side by side"
4. [adj]  (of elected officers) elected but not yet serving; "our next president"

Next
Many of these essays on the Internet, including one about Jonathan Lebed, a 13-year-old day-trading wiz, were initially published in the New York Times Magazine. A New York Times Notable Book for 2001.

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1. \Next\ (n[e^]kst), a., superl. of {Nigh}. [AS. n[=e]hst,
   ni['e]hst, n[=y]hst, superl. of ne['a]h nigh. See {Nigh}.]
   1. Nearest in place; having no similar object intervening.
      --Chaucer.
            Her princely guest Was next her side; in order sat
            the rest.                             --Dryden.
            Fear followed me so hard, that I fled the next way.
                                                  --Bunyan.
   2. Nearest in time; as, the next day or hour.
   3. Adjoining in a series; immediately preceding or following
      in order.
            None could tell whose turn should be the next.
                                                  --Gay.
   4. Nearest in degree, quality, rank, right, or relation; as,
      the next heir was an infant.
            The man is near of kin unto us, one of our next
            kinsmen.                              --Ruth ii. 20.
   Note: Next is usually followed by to before an object, but to
         is sometimes omitted. In such cases next in considered
         by many grammarians as a preposition.
   {Next friend} (Law), one who represents an infant, a married
      woman, or any person who can not appear sui juris, in a
      suit at law.
   

2. \Next\, adv.
   In the time, place, or order nearest or immediately
   suceeding; as, this man follows next.