The term 'Big Name in French Fashion' can be summarized by the crossword solution DIOR (4 letters). Christian Dior, commonly referred to as Dior, was a French fashion designer who founded the eponymous fashion house in 1946. He is credited with revolutionizing women's fashion in the post-World War II era and is widely regarded as one of the most influential designers of all time. Dior's designs are still popular today, and the brand continues to be a leader in the fashion industry.