Gruel is a type of thin PORRIDGE or soup made from oats, barley, or other grains. It is often served as a breakfast food or as a light meal. PORRIDGE, an 8-letter word, is a type of gruel made from oats and water or milk. Atole, a 5-letter word, is a type of gruel made from cornmeal, water, and spices. SKILLY, a 6-letter word, is a type of gruel made from oatmeal, water, and salt. All three words refer to different types of gruel, a type of thin PORRIDGE or soup.