The crossword solution for the term 'KIND OF A DOLLAR' is SLUG, which is a four-letter word. A SLUG is a unit of currency that is not officially recognized by any government or central bank. It is a form of private currency that is used in some parts of the United States and other countries. Slugs are typically used as a form of barter or informal exchange, and are not legal tender. They are often used in place of cash in small transactions, such as buying food or paying for services.