The term 'large branch of a tree' can be described by two crossword solutions: 'LIMB' (4 letters) and 'BOUGH' (5 letters). A LIMB is a large branch of a tree that extends from the trunk. It is usually thicker than a twig and can be used to support the weight of leaves, flowers, and fruit. A BOUGH is a large branch of a tree that is typically found near the top of the tree. It is usually thicker than a LIMB and is used to support the weight of the foliage.