French Dip is a type of sandwich that originated in the United States. It consists of thinly sliced roast beef on a French roll, which is then dipped into the juices of the roast beef. The term 'plie' is a French word meaning 'to bend' or 'to fold, ' and is often used in ballet to describe a movement where the dancer bends their knees. Therefore, the crossword solution for the term 'French Dip' is 'plie, ' as it is a reference to the dipping of the French roll into the roast beef juices.