Volcanic spew is a term used to describe the eruption of molten rock, ASH, and gas from a volcano. The crossword solutions for this term are ASHES (5 letters), LAVA (4 letters), ASH (3 letters), and lavarocks (9 letters). ASHES are the remains of something that has been burned, and LAVA is molten rock that is expelled from a volcano during an eruption. ASH is a type of fine-grained material that is created when something is burned, and lavarocks are rocks that have been formed by the cooling of LAVA.