bell ringer in WordNet English dictionary

1. something that exactly succeeds in achieving its goal
   "the new advertising campaign was a bell ringer"; "scored a bull's eye"; "hit the mark"; "the president's speech was a home run"
   bell ringer  bull's eye  mark  home run 
   
2. someone who plays musical handbells
   bell ringer 
   
3. a person who rings church bells (as for summoning the congregation)
   toller  bell ringer  ringer 
   

bell ringer in English Wiktionary