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• n  a large cloud of rubble and dust shaped like a mushroom and rising into the sky after an explosion (especially of a nuclear bomb)

• mushroom
• mushroom-shaped cloud

News & Articles

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• Not Again: Deaths recall Dude Fire tragedy
  Their fate was sealed five miles overhead as the top of the roiling mushroom cloud of hot air began to disintegrate.
  July 2, 2013 - Payson Roundup