show-stopper
n 1: an act so striking or impressive that the show must be
delayed until the audience quiets down [syn: {show-
stopper}, {showstopper}, {stopper}]
2: something that is strikingly attractive or has great popular
appeal; "she has a show-stopper of a smile"; "the brilliant
orange flowers against the green foliage were a showstopper"
[syn: {show-stopper}, {showstopper}]