The term 'main body' can be defined by four crossword solutions: MASS (4 letters), TRUNK (5 letters), BULK (4 letters), and OCEAN (5 letters). MASS refers to a large quantity of matter, usually referring to a physical object. TRUNK is the main stem of a tree or plant, or the body of an animal such as an elephant. BULK is a large MASS or quantity of something, often referring to a physical object. OCEAN is a large body of salt water that covers most of the Earth's surface. Together, these four words can be used to describe the main body of something, whether it be a physical object, a tree, an animal, or a large body of water.