A brief fall of rain or, sometimes, of hail or snow. Also called shower bath . a bath in which water is sprayed on the body, usually from an overhead perforated nozzle (showerhead ). Cold water goes straight to the cold pipe, while hot water makes a stop in the water heater first. Water from both pipes meets at the shower valve, which mixes it together and sends it to the shower head or tub spout. Depending on your shower configuration, you will need different types of valves and hardware.