A combustible pile is a pile of materials that can be set alight and burned. The term can refer to four different solutions: PYRE (4 letters), pyres (5 letters), FUEL (4 letters), and tinder (6 letters). A PYRE is a large pile of combustible material, such as wood, used for burning a corpse as part of a funeral rite. Pyres are multiple pyres. FUEL is a substance that can be burned to produce energy. Tinder is a flammable material that is used to help start a fire.