The Collaborative International Dictionary of English v.0.48:

Sensible \Sen"si*ble\, a. [F., fr. L. sensibilis, fr. sensus
   sense.]
   1. Capable of being perceived by the senses; apprehensible
      through the bodily organs; hence, also, perceptible to the
      mind; making an impression upon the sense, reason, or
      understanding; ?????? heat; sensible resistance.
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            Air is sensible to the touch by its motion.
                                                  --Arbuthnot.
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            The disgrace was more sensible than the pain. --Sir
                                                  W. Temple.
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            Any very sensible effect upon the prices of things.
                                                  --A. Smith.
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   2. Having the capacity of receiving impressions from external
      objects; capable of perceiving by the instrumentality of
      the proper organs; liable to be affected physsically or
      mentally; impressible.
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            Would your cambric were sensible as your finger.
                                                  --Shak.
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   3. Hence: Liable to impression from without; easily affected;
      having nice perception or acute feeling; sensitive; also,
      readily moved or affected by natural agents; delicate; as,
      a sensible thermometer. "With affection wondrous
      sensible." --Shak.
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   4. Perceiving or having perception, either by the senses or
      the mind; cognizant; perceiving so clearly as to be
      convinced; satisfied; persuaded.
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            He [man] can not think at any time, waking or
            sleeping, without being sensible of it. --Locke.
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            They are now sensible it would have been better to
            comply than to refuse.                --Addison.
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   5. Having moral perception; capable of being affected by
      moral good or evil.
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   6. Possessing or containing sense or reason; giftedwith, or
      characterized by, good or common sense; intelligent; wise.
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            Now a sensible man, by and by a fool. --Shak.
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   Sensible note or Sensible tone (Mus.), the major seventh
      note of any scale; -- so called because, being but a half
      step below the octave, or key tone, and naturally leading
      up to that, it makes the ear sensible of its approaching
      sound. Called also the leading tone.

   Sensible horizon. See Horizon, n., 2.
      (a) .
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   Syn: Intelligent; wise.

   Usage: Sensible, Intelligent. We call a man sensible
          whose judgments and conduct are marked and governed by
          sound judgment or good common sense. We call one
          intelligent who is quick and clear in his
          understanding, i. e., who discriminates readily and
          nicely in respect to difficult and important
          distinction. The sphere of the sensible man lies in
          matters of practical concern; of the intelligent man,
          in subjects of intellectual interest. "I have been
          tired with accounts from sensible men, furnished with
          matters of fact which have happened within their own
          knowledge." --Addison. "Trace out numerous footsteps .
          . . of a most wise and intelligent architect
          throughout all this stupendous fabric." --Woodward.
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WordNet (r) 3.0 (2006):

leading tone
    n 1: (music) the seventh note of the diatonic scale [syn:
         subtonic, leading tone]