The term 'drain away' can be summarized by two crossword solutions, 'LEACH' and 'SAP'. Leaching is a process in which water-soluble substances are removed from a material through the use of a liquid. This process is often used to remove minerals and other nutrients from soil. SAP is the fluid that circulates through a plant's vascular system, carrying nutrients and water to its various parts. It is also responsible for transporting the plant's hormones and other metabolic products. Both leaching and SAP are important processes in the natural world, as they help to regulate the environment and ensure the health of plants and animals.