The term 'Principal Dish' is often used to refer to the main course of a meal. In this case, the crossword solution for the term is 'Entree', which is a French word meaning 'ENTRY'. Entrees are typically the main dish of a meal, and can include a variety of dishes such as meat, fish, or vegetables. They are usually served after the appetizer and before the dessert. Entrees are usually the most substantial part of the meal, and are often the most expensive item on the menu.