Source : Webster's Revised Unabridged Dictionary (1913)

Esprit \Es`prit"\, n. [F. See {Spirit}.]
   Spirit.

   {Esprit de corps}, a French phrase much used by English
      writers to denote the common spirit pervading the members
      of a body or association of persons. It implies sympathy,
      enthusiasm, devotion, and jealous regard for the honor of
      the body as a whole.

Source : WordNet®

esprit
     n : liveliness of mind or spirit

Source : Free On-Line Dictionary of Computing

ESPRIT
     
        {European Strategic Programme for Research in Information Technology}