Meaning of bonanza

bo•nan•za

Pronunciation: (bu-nan'zu, bō-), [key]
— n.
  1. a rich mass of ore, as found in mining.
  2. a source of great and sudden wealth or luck; a spectacular windfall: The play proved to be a bonanza for its lucky backers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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