The term SHADE AT A SWIMMING POOL can be summarized as the solution AQUA, which is a four-letter word. AQUA is a Latin word meaning 'WATER, ' and it is often used to refer to a light blue or greenish-blue color. In this context, it refers to the shade provided by a swimming pool, which is typically created by an overhead structure such as an umbrella or canopy. This shade helps to protect swimmers from the sun's harmful rays and can also provide a more comfortable environment for swimming.