The term 'Mediterranean Sail' refers to a type of sail used in the Mediterranean Sea. It is also known as a LATEEN sail, which is a triangular sail that is attached to a long yardarm and is supported by a mast. This type of sail is used on small boats and is popular in the Mediterranean region due to its ability to catch the wind from any direction. The LATEEN sail is also used in other parts of the world, such as the Caribbean and South America.