The term 'Clipper Feature' refers to three components of a clipper ship, which is a type of sailing vessel. The first component is the MAST, which is a tall vertical pole that supports the sails. The second component is the SAIL, which is a large piece of fabric that catches the wind and propels the ship forward. The third component is the topgallant, which is an additional SAIL located at the very top of the MAST. Together, these three components make up the Clipper Feature of a clipper ship.