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

windfall \wind"fall`\, n.
   1. anything blown down or off by the wind, as fruit from a
      tree, or the tree itself, or a portion of a forest
      prostrated by a violent wind, etc. "they became a windfall
      upon the sudden." --bacon.
      1913 webster

   2. an unexpected legacy, or other gain.
      1913 webster

            he had a mighty windfall out of doubt. --b. jonson.
      1913 webster
      1913 webster

[2] : WordNet (r) 2.0

windfall
     n 1: fruit that has fallen from the tree
     2: a sudden happening that brings good fortune as a sudden
        opportunity to make money; "the demand for testing has
        created a boom for those unregulated laboratories where
        boxes of specimen jars are processed lik an assembly line"
        syn: boom, bonanza, gold rush, gravy, godsend,
        manna from heaven, bunce
see also:
boom bonanza gold rush gravy godsend manna from heaven 
bunce 

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

29 moby thesaurus words for "windfall":
   boast, bonus, buried treasure, catch, diamond, discovery, find,
   finding, foundling, gem, godsend, good thing, gravy, jewel, pearl,
   plum, pride, pride and joy, prize, treasure, treasure trove,
   trophy, trouvaille, trove, waifs, waifs and strays, windfall money,
   windfall profit, winner

[4] : U.S. Gazetteer (1990)

windfall, in
  zip codes: 46076

Windfall >> W Words
Windfall, definition of term: Windfall
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