Swirl

swėrl, v.i. to sweep along with a whirling motion.— n. whirling motion, as of wind or water: a curl or twist: the rush of a fish through the water in rising to a fly.— adj. Swirl′y . [Skeat explains as Scand., Norw. svirla , to whirl round, a freq. of sverra , to whirl, orig. to hum.]