The crossword solution for the term 'Stalactite Starter' is 'DRIP', which refers to the process of water dripping from the ceiling of a cave and forming a stalactite. Stalactites are formed when water containing dissolved minerals seeps through cracks in the cave ceiling and evaporates, leaving behind the minerals that form the stalactite. The process of water dripping from the ceiling of a cave is known as 'DRIP' and is the starting point for the formation of a stalactite.