The term 'hula hoop' is a combination of two words: 'LEI' and 'RING'. 'LEI' is a Hawaiian garland made of flowers, leaves, shells, or feathers, and 'RING' is a circular band of metal, wood, or other material. Together, they form the popular toy known as the hula hoop, which consists of a hoop that is twirled around the waist, arms, or legs. The hula hoop has been a popular toy since its invention in 1958, and it is still enjoyed by children and adults alike.