The term CLIMBING LEGUME refers to two different types of legumes, VETCH (5 letters) and SWEETPEA (8 letters). VETCH is a type of legume that is often used as a cover crop or forage crop. It is a climbing plant with tendrils that can be used to support itself on other plants or structures. Sweetpea is a flowering legume that is also a climbing plant. It is grown for its attractive flowers and is often used in gardens and flower beds.