The term 'stone chip' can be described by two crossword solutions: spall (5 letters) and gallet (6 letters). Spall is a fragment of rock that has been broken off from a larger piece due to weathering or other natural processes. Gallet is a type of stone chip that is formed by the action of water on a rock surface, resulting in a rounded shape. Both spall and gallet are commonly found in areas with high levels of erosion.