Scull/skʌl/ Definition 1 of 3Pro Tip 1/3Water sports Scull as a boat refers to a sport and leisure activity on water. She joined the club to learn how to handle a scull. Pro Tip 2/3Boat size Specifically, 'scull' indicates a smaller, slender boat compared to other rowboats. The single scull cut neatly through the water. Pro Tip 3/3Crew variations 'Scull' can refer to boats for one or two rowers, whereas 'shell' is for larger crews. In the Olympics, athletes compete in single and double sculls.