Source : Webster's Revised Unabridged Dictionary (1913)

Fiasco \Fi*as"co\, n.; pl. {Fiascoes}. [It.]
   A complete or ridiculous failure, esp. of a musical
   performance, or of any pretentious undertaking.

Source : WordNet®

fiasco
     n : a sudden and violent collapse [syn: {debacle}]
     [also: {fiascoes} (pl)]