IBM Watson is a technological breakthrough developed by IBM, which is a computer system capable of answering questions posed in natural language. It gained public attention in 2011 when it competed on the game show "Jeopardy!" and won against human contestants.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Technological breakthrough first seen on "Jeopardy!" in 2011. Explanations are generated by AI and may be inaccurate.