The crossword solution for the term 'BE HEAVY' is 'METAL'. METAL is a material that is composed of one or more chemical elements, such as iron, aluminum, and copper. It is a hard, strong, and durable substance that is used in many industries, including construction, manufacturing, and transportation. METAL is also used to make jewelry, coins, and other decorative items. It is an important part of our everyday lives and has been used for centuries.