The term DRIP SOURCE can be defined by two crossword solutions, LEAK and STALACTITE. A LEAK is a small hole or crack in a container or surface that allows liquid to escape. Stalactites are formations of calcium carbonate that hang from the ceiling of caves and other underground areas. They are formed when water containing dissolved calcium carbonate drips from the ceiling and accumulates on the floor below. Both of these solutions refer to sources of dripping liquid, which is the definition of DRIP SOURCE.