#1 showstopper n. [show-stopper, stopper] an act so striking or impressive that the show must be delayed until the audience quiets down. wn
#2 showstopper n. [show-stopper] 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". wn
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