Source : Webster's Revised Unabridged Dictionary (1913)

Sentiment \Sen"ti*ment\, n. [OE. sentement, OF. sentement, F.
   sentiment, fr. L. sentire to perceive by the senses and mind,
   to feel, to think. See {Sentient}, a.]
   1. A thought prompted by passion or feeling; a state of mind
      in view of some subject; feeling toward or respecting some
      person or thing; disposition prompting to action or
      expression.

            The word sentiment, agreeably to the use made of it
            by our best English writers, expresses, in my own
            opinion very happily, those complex determinations
            of the mind which result from the co["o]peration of
            our rational powers and of our moral feelings.
                                                  --Stewart.

            Alike to council or the assembly came, With equal
            souls and sentiments the same.        --Pope.

   2. Hence, generally, a decision of the mind formed by
      deliberation or reasoning; thought; opinion; notion;
      judgment; as, to express one's sentiments on a subject.

            Sentiments of philosophers about the perception of
            external objects.                     --Reid.

            Sentiment, as here and elsewhere employed by Reid in
            the meaning of opinion (sententia), is not to be
            imitated.                             --Sir W.
                                                  Hamilton.

   3. A sentence, or passage, considered as the expression of a
      thought; a maxim; a saying; a toast.

   4. Sensibility; feeling; tender susceptibility.

            Mr. Hume sometimes employs (after the manner of the
            French metaphysicians) sentiment as synonymous with
            feeling; a use of the word quite unprecedented in
            our tongue.                           --Stewart.

            Less of sentiment than sense.         --Tennyson.

   Syn: Thought; opinion; notion; sensibility; feeling.

   Usage: {Sentiment}, {Opinion}, {Feeling}. An opinion is an
          intellectual judgment in respect to any and every kind
          of truth. Feeling describes those affections of
          pleasure and pain which spring from the exercise of
          our sentient and emotional powers. Sentiment
          (particularly in the plural) lies between them,
          denoting settled opinions or principles in regard to
          subjects which interest the feelings strongly, and are
          presented more or less constantly in practical life.
          Hence, it is more appropriate to speak of our
          religious sentiments than opinions, unless we mean to
          exclude all reference to our feelings. The word
          sentiment, in the singular, leans ordinarily more to
          the side of feeling, and denotes a refined sensibility
          on subjects affecting the heart. ``On questions of
          feeling, taste, observation, or report, we define our
          sentiments. On questions of science, argument, or
          metaphysical abstraction, we define our opinions. The
          sentiments of the heart. The opinions of the mind . .
          . There is more of instinct in sentiment, and more of
          definition in opinion. The admiration of a work of art
          which results from first impressions is classed with
          our sentiments; and, when we have accounted to
          ourselves for the approbation, it is classed with our
          opinions.'' --W. Taylor.

Source : WordNet®

sentiment
     n 1: tender, romantic, or nostalgic feeling or emotion
     2: a personal belief or judgment that is not founded on proof
        or certainty; "my opinion differs from yours"; "what are
        your thoughts on Haiti?" [syn: {opinion}, {persuasion}, {view},
         {thought}]