The crossword solution for the term MAR is PIE, which is a 3 letter word. PIE is a type of dessert that is made with a pastry dough crust and filled with a variety of sweet or savory ingredients. It is a popular dish in many countries around the world and can be served hot or cold. PIE can be made with a variety of fruits, nuts, and other ingredients, and is often served with ice cream or whipped cream.