The term 'CHOCOLATE UNIT' can be solved by the crossword solution 'BAR', which is a three letter word. A chocolate BAR is a type of confectionery product made from chocolate, which is often sold as a snack food. Chocolate bars are usually made from cocoa solids, sugar, and milk, and come in a variety of sizes and shapes. They are often packaged in colorful wrappers and can be found in most grocery stores and convenience stores.