(US) A sudden thought, particularly one that solves a long-standing problem.I had been working on the problem for weeks, and then I had a brainstorm and saw that the solution was easy.
2005, "Iguchi hit ruins Red Sox's night", BBC Online, 5 OctoberA terrible fielding error from Tony Graffanino proved costly. ... Aaron Rowand collected an RBI double to get them off the mark before Graffanino's brainstorm. Juan Uribe hit a roller to the second baseman, who let the potential inning-ending double-play ball roll under his glove, leaving runners at first and third bases.