The Collaborative International Dictionary of English v.0.48:

After \Aft"er\, prep.
   1. Behind in place; as, men in line one after another. "Shut
      doors after you." --Shak.
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   2. Below in rank; next to in order. --Shak.
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            Codrus after Ph?bus sings the best.   --Dryden.
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   3. Later in time; subsequent; as, after supper, after three
      days. It often precedes a clause. Formerly that was
      interposed between it and the clause.
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            After I am risen again, I will go before you into
            Galilee.                              --Matt. xxvi.
                                                  32.
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   4. Subsequent to and in consequence of; as, after what you
      have said, I shall be careful.
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   5. Subsequent to and notwithstanding; as, after all our
      advice, you took that course.
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   6. Moving toward from behind; following, in search of; in
      pursuit of.
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            Ye shall not go after other gods.     --Deut. vi.
                                                  14.
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            After whom is the king of Israel come out? --1 Sam.
                                                  xxiv. 14.
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   7. Denoting the aim or object; concerning; in relation to;
      as, to look after workmen; to inquire after a friend; to
      thirst after righteousness.
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   8. In imitation of; in conformity with; after the manner of;
      as, to make a thing after a model; a picture after Rubens;
      the boy takes after his father.
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   To name or call after, to name like and reference to.
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            Our eldest son was named George after his uncle.
                                                  --Goldsmith.
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   9. According to; in accordance with; in conformity with the
      nature of; as, he acted after his kind.
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            He shall not judge after the sight of his eyes.
                                                  --Isa. xi. 3.
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            They that are after the flesh do mind the things of
            the flesh.                            --Rom. viii.
                                                  5.
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   10. According to the direction and influence of; in
       proportion to; befitting. [Archaic]
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             He takes greatness of kingdoms according to bulk
             and currency, and not after their intrinsic value.
                                                  --Bacon.
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   After all, when everything has been considered; upon the
      whole.

   After (with the same noun preceding and following), as,
      wave after wave, day after day, several or many (waves,
      etc.) successively.

   One after another, successively.

   To be after, to be in pursuit of in order to reach or get;
      as, he is after money.
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WordNet (r) 3.0 (2006):

one after another
    adv 1: in single file; "the prisoners came out one by one" [syn:
           one by one, one after another, one at a time]