Learner's definition of SPA
a place where water that has many minerals in it comes up naturally from the ground and where people go to improve their health by swimming in, bathing in, or drinking the water
a place where people go to improve their health and appearance by exercising, relaxing, etc.
— called also
health spa, (chiefly British)
a bathtub in which a pump causes hot water and air bubbles to move around your body