The Collaborative International Dictionary of English v.0.48:

Staging \Sta"ging\ (st[=a]"j[i^]ng), n.
   A structure of posts and boards for supporting workmen, etc.,
   as in building.
   [1913 Webster]

   2. The business of running stagecoaches; also, the act of
      journeying in stagecoaches.
      [1913 Webster]

WordNet (r) 3.0 (2006):

staging
    n 1: the production of a drama on the stage [syn: theatrical
         production, staging]
    2: a system of scaffolds [syn: scaffolding, staging]
    3: travel by stagecoach
    4: getting rid of a stage of a multistage rocket