Sentence:  We tracked down four people who introduced some of the most popular fad items of the past few decades to find out how they handled their sudden prosperity—and rapid exit from the limelight. Some were relaxing and enjoying their spoils. Others were trying to capture <WSD>lightning in a bottle</WSD> one more time.<!-- Connection to one-hit wonder, nuance of fleeting --> 
Meaning of the word marked with <WSD> tags:  Great, unlikely, fleeting success, particularly entrepreneurial or media.