The term YACHT MATERIAL can be broken down into two crossword solutions: TEAK (4 letters) and TEAKWOOD (8 letters). TEAK is a tropical hardwood tree species native to South and Southeast Asia, and is commonly used in the construction of boats and yachts due to its durability and resistance to rot. Teakwood is the wood obtained from TEAK trees, and is also used in the construction of boats and yachts for its strength and water-resistant properties.