Source : Webster's Revised Unabridged Dictionary (1913)

Intelligence \In*tel"li*gence\, n. [F. intelligence, L.
   intelligentia, intellegentia. See {Intelligent}.]
   1. The act or state of knowing; the exercise of the
      understanding.

   2. The capacity to know or understand; readiness of
      comprehension; the intellect, as a gift or an endowment.

            And dimmed with darkness their intelligence.
                                                  --Spenser.

   3. Information communicated; news; notice; advice.

            Intelligence is given where you are hid. --Shak.

   4. Acquaintance; intercourse; familiarity. [Obs.]

            He lived rather in a fair intelligence than any
            friendship with the favorites.        --Clarendon.

   5. Knowledge imparted or acquired, whether by study,
      research, or experience; general information.

            I write as he that none intelligence Of meters hath,
            ne flowers of sentence.               --Court of
                                                  Love.

   6. An intelligent being or spirit; -- generally applied to
      pure spirits; as, a created intelligence. --Milton.

            The great Intelligences fair That range above our
            mortal state, In circle round the blessed gate,
            Received and gave him welcome there.  --Tennyson.

   {Intelligence office}, an office where information may be
      obtained, particularly respecting servants to be hired.

   Syn: Understanding; intellect; instruction; advice; notice;
        notification; news; information; report.

Source : WordNet®

intelligence
     n 1: the ability to comprehend; to understand and profit from
          experience [ant: {stupidity}]
     2: a unit responsible for gathering and interpreting
        information about an enemy [syn: {intelligence service}, {intelligence
        agency}]
     3: secret information about an enemy (or potential enemy); "we
        sent out planes to gather intelligence on their radar
        coverage" [syn: {intelligence information}]
     4: new information about specific and timely events; "they
        awaited news of the outcome" [syn: {news}, {tidings}, {word}]
     5: the operation of gathering information about an enemy [syn:
        {intelligence activity}, {intelligence operation}]