The crossword solution for the term 'KIND OF GEL' is ORAL, which is a four-letter word. ORAL gel is a type of gel that is used in the mouth, typically to treat a variety of conditions such as canker sores, dry mouth, and bad breath. It is usually applied directly to the affected area and can provide relief from pain and discomfort. ORAL gels are available over-the-counter and can also be prescribed by a doctor.