Definitions

Chaplin

  1. the principle of life
  2. the mind, including both conscious and unconscious processes
  3. the self 1

English & English

  1. Historically, the personification (by the Greeks) of the life principle.
  2. The performer of psychological functions or acts. 2

References

  1. Dictionary of Psychology 

  2. A Comprehensive Dictionary of Psychological and Psychoanalytical TermsÂ