noun (n)

• a person who smashes something(noun.person)

  source: wordnet30
• a very attractive or seductive looking woman(noun.person)

  Synonym:
  beauty, dish, knockout, looker, lulu, mantrap, peach, ravisher, stunner, sweetheart
  

  source: wordnet30
• a conspicuous success(noun.act)

  Example:
  That new Broadway show is a real smasher.
  

  Synonym:
  bang, hit, smash, strike
  

  source: wordnet30
• One who, or that which, smashes or breaks things to pieces.(noun)

  source: webster1913