The Collaborative International Dictionary of English v.0.48:

Nice \Nice\ (n[imac]s), a. [Compar. Nicer (n[imac]"s[~e]r);
   superl. Nicest.] [OE., foolish, fr. OF. nice ignorant,
   fool, fr. L. nescius ignorant; ne not + scius knowing, scire
   to know. Perhaps influenced by E. nesh delicate, soft. See
   No, and Science.]
   1. Foolish; silly; simple; ignorant; also, weak; effeminate.
      [Obs.] --Gower.
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            But say that we ben wise and nothing nice.
                                                  --Chaucer.
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   2. Of trifling moment; unimportant; trivial. [Obs.]
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            The letter was not nice, but full of charge
            Of dear import.                       --Shak.
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   3. Overscrupulous or exacting; hard to please or satisfy;
      fastidious in small matters.
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            Curious not knowing, not exact but nice. --Pope.
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            And to taste
            Think not I shall be nice.            --Milton.
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   4. Delicate; refined; dainty; pure.
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            Dear love, continue nice and chaste.  --Donne.
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            A nice and subtile happiness.         --Milton.
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   5. Apprehending slight differences or delicate distinctions;
      distinguishing accurately or minutely; carefully
      discriminating; as, a nice taste or judgment. "Our author
      happy in a judge so nice." --Pope. "Nice verbal
      criticism." --Coleridge.
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   6. Done or made with careful labor; suited to excite
      admiration on account of exactness; evidencing great
      skill; exact; fine; finished; as, nice proportions, nice
      workmanship, a nice application; exactly or fastidiously
      discriminated; requiring close discrimination; as, a nice
      point of law, a nice distinction in philosophy.
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            The difference is too nice
            Where ends the virtue, or begins the vice. --Pope.
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   7. Pleasing; agreeable; gratifying; delightful; good; as, a
      nice party; a nice excursion; a nice day; a nice sauce,
      etc. [Loosely & Colloquially]
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   8. Pleasant; kind; as, a nice person.
      [PJC]

   9. Hence: Well-mannered; well-behaved; as, nice children.
      [PJC]

            He's making a list, checking it twice.
            Gonna find out who's naughty or nice
            Santa Claus is coming to town.        --Song.

   To make nice of, to be scrupulous about. [Obs.] --Shak.
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   Syn: Dainty; delicate; exquisite; fine; accurate; exact;
        correct; precise; particular; pleasant; kind;
        scrupulous; punctilious; fastidious; squeamish; finical;
        effeminate; silly; well-mannered; well-behaved.
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