The term 'WILLOW ROD' is composed of two words: 'WILLOW' and 'ROD'. The first word, 'WILLOW', refers to a type of tree that is native to many parts of the world. It is known for its slender, flexible branches and its ability to grow in wet areas. The second word, 'ROD', is a long, thin piece of material that is used for various purposes, such as fishing, measuring, and even as a weapon. The crossword solution for this term is 'OSIER', which is a type of WILLOW tree that is often used for weaving baskets and making furniture. OSIER willows are also used for erosion control and for creating living fences.