Psyche

Psy⋅che
  /ˈsaɪki/ [sahy-kee]
–noun
1. Classical Mythology. a personification of the soul, which in the form of a beautiful girl was loved by Eros.
2. (lowercase) the human soul, spirit, or mind.
3. (lowercase) Psychology, Psychoanalysis. the mental or psychological structure of a person, esp. as a motive force.
4. Neoplatonism. the second emanation of the One, regarded as a universal consciousness and as the animating principle of the world.
5. a female given name.
Origin:
1650–60 for def. 2; < L psȳchē < Gk psȳch lit., breath, deriv. of psȳ́chein to breathe, blow, hence, live (see psycho- )