DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Dossier \Dos`sier"\ (d[-o]s`sy[asl]"; E. d[o^]s"s[i^]*[~e]r), n.
      [F., back of a thing, bulging bundle of papers, fr. dos
      back.]
      A bundle containing the papers in reference to some matter.
      [Webster 1913 Suppl.]