The term 'CLIPPER FEATURES' can be summarized by the crossword solution SAILS. Clippers were a type of fast sailing ship that was developed in the 19th century. They were characterized by their large sails, which allowed them to travel quickly across the ocean. The clipper features included three or four masts, with square sails on each mast. The sails were made of lightweight canvas and could be adjusted to take advantage of the wind. The clippers also had a long, narrow hull, which allowed them to cut through the waves more easily.