Source : Webster's Revised Unabridged Dictionary (1913)

Nobody \No"bod*y\, n.; pl. {Nobodies}. [No, a. + body.]
   1. No person; no one; not anybody.

   2. Hence: A person of no influence or importance; an
      insignificant or contemptible person. [Colloq.]

Source : WordNet®

nobody
     n : a person of no influence [syn: {cipher}, {cypher}, {nonentity}]