The term 'DOW UPTICK' refers to an increase in the Dow Jones Industrial Average, which is a stock market index that tracks the performance of 30 large publicly traded companies in the United States. The term 'GAIN' is a four-letter solution to the crossword puzzle and can be used to describe the increase in the Dow Jones Industrial Average. Therefore, the term 'DOW UPTICK' can be summarized as an increase in the Dow Jones Industrial Average, which is represented by the four-letter solution 'GAIN'.