English noun: showstopper
|1.||showstopper (communication) an act so striking or impressive that the show must be delayed until the audience quiets down|
|Broader (hypernym)||act, bit, number, routine, turn|
|2.||showstopper (attribute) something that is strikingly attractive or has great popular appeal|
|Samples||She has a show-stopper of a smile.|
The brilliant orange flowers against the green foliage were a showstopper.
|Broader (hypernym)||attraction, attractiveness|