The Collaborative International Dictionary of English v.0.48:

Intuition \In`tu*i"tion\, n. [L. intuitus, p. p. of intueri to
   look on; in- in, on + tueri: cf. F. intuition. See
   Tuition.]
   [1913 Webster]
   1. A looking after; a regard to. [Obs.]
      [1913 Webster]

            What, no reflection on a reward! He might have an
            intuition at it, as the encouragement, though not
            the cause, of his pains.              --Fuller.
      [1913 Webster]

   2. Direct apprehension or cognition; immediate knowledge, as
      in perception or consciousness; -- distinguished from
      "mediate" knowledge, as in reasoning; as, the mind knows
      by intuition that black is not white, that a circle is not
      a square, that three are more than two, etc.; quick or
      ready insight or apprehension.
      [1913 Webster]

            Sagacity and a nameless something more, -- let us
            call it intuition.                    --Hawthorne.
      [1913 Webster]

   3. Any object or truth discerned by intuition.
      [1913 Webster]

   4. Any quick insight, recognized immediately without a
      reasoning process; a belief arrived at unconsciously; --
      often it is based on extensive experience of a subject.
      [PJC]

   5. The ability to have insight into a matter without
      conscious thought; as, his chemical intuition allowed him
      to predict compound conformations without any conscious
      calculation; a mother's intuition often tells her what is
      best for her child.
      [PJC]

WordNet (r) 3.0 (2006):

intuition
    n 1: instinctive knowing (without the use of rational processes)
    2: an impression that something might be the case; "he had an
       intuition that something had gone wrong" [syn: intuition,
       hunch, suspicion]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "intuition":
   ESP, anschauung, clairsentience, clairvoyance, common sense,
   extrasensory perception, feeling, foreboding, forefeeling,
   foresight, funny feeling, hunch, impression, insight, instinct,
   intimation, intuitive impression, intuitiveness, lucidity,
   mother wit, perception, perceptiveness, percipience, perspicacity,
   preapprehension, premonition, presentiment, psychometry,
   second sight, sixth sense, suspicion, vague feeling, vague idea



The Free On-line Dictionary of Computing (30 December 2018):

Intuition

    The Amiga windowing system (a
   shared-code library).

   (1997-08-01)