Source : Webster's Revised Unabridged Dictionary (1913)

Psyche \Psy"che\, n. [L., fr. Gr. PSychh` Psyche, fr. psychh`
   the soul.]
   1. (Class Myth.) A lovely maiden, daughter of a king and
      mistress of Eros, or Cupid. She is regarded as the
      personification of the soul.

   2. The soul; the vital principle; the mind.

   3. [F. psych['e].] A cheval glass.

Source : WordNet®

psyche
     n 1: that which is responsible for one's thoughts and feelings;
          the seat of the faculty of reason; "his mind wandered";
          "I couldn't get his words out of my head" [syn: {mind},
          {head}, {brain}, {nous}]
     2: the immaterial part of a person; the actuating cause of an
        individual life [syn: {soul}]
     3: (Greek mythology) a beautiful princess loved by Cupid who
        visited her at night and told her she must not try to see
        him; became the personification of the soul