bull's_eye
1. [ noun ] (sport) in target shooting: a score made by hitting the center of the target
Examples:

"in repeated sets of five shots his numbers of bull's-eyes varied"

Related terms: score
2. [ noun ] the center of a target
Synonyms: bull
Related terms: center target
3. [ noun ] something that exactly succeeds in achieving its goal
Synonyms: mark home_run bell_ringer
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"

Related terms: success set