[1] : The Collaborative International Dictionary of English v.0.48

backdrop \back"drop\ n.
   1. the scenery hung at back of stage. also called in britain
      backcloth.

   syn: background, backcloth
        wordnet 1.5

   2. the background, setting, or circumstances of an event; as,
      the backdrop for the summit meeting.
      pjc
see also:
backcloth 

[2] : WordNet (r) 2.0

backdrop
     n : scenery hung at back of stage syn: background, backcloth
see also:
background backcloth 

[3] : Moby Thesaurus II by Grady Ward, 1.0

48 moby thesaurus words for "backdrop":
   act drop, arena, asbestos, asbestos board, back, background,
   batten, border, cloth, coulisse, counterweight, curtain,
   curtain board, cyclorama, decor, distance, drop, drop curtain,
   field, fire curtain, flat, flipper, ground, hanging, hinterland,
   locale, mise-en-scene, rag, rear, scene, scenery, screen, setting,
   side scene, stage, stage screw, stage set, stage setting, tab,
   tableau, teaser, theater, tormentor, transformation,
   transformation scene, wing, wingcut, woodcut

Backdrop >> B Words
Backdrop, definition of term: Backdrop
backdrop_pag1.html