The term 'graceful horses' can be summarized by the crossword solution 'ARABs'. ARAB stands for 'American Riding Arabian Breed', which is a breed of horse that is known for its grace and agility. This breed is often used in equestrian sports, such as dressage, show jumping, and endurance riding. They are also popular for their beauty and intelligence. The ARAB is a versatile breed that is suitable for a variety of activities, from pleasure riding to competitive events.