bell ringer

(noun) a person who rings church bells (as for summoning the congregation). Synonyms: toller, bell ringer, ringer.

(noun) someone who plays musical handbells. Synonyms: bell ringer.

(noun) something that exactly succeeds in achieving its goal. Synonyms: bell ringer, bull's eye, mark, home run. Examples: "The new advertising campaign was a bell ringer." "Scored a bull's eye." "Hit the mark." "The president's speech was a home run."