The term 'Deck Timber' refers to the type of wood used to construct a deck. The most common type of wood used is TEAK, which is a 4-letter word. TEAK is a tropical hardwood that is known for its durability and resistance to rot and decay. It is also highly resistant to insects and fungi, making it an ideal choice for outdoor use. TEAK is also known for its beautiful golden-brown color, which makes it a popular choice for decks.