1swish 
/ˈswɪʃ/ verb
swish·es; swished; swish·ing /ˈswɪʃ/ verb : to move with or cause (something) to move with a soft sweeping or brushing sound [no obj] ▪ He watched as the windshield wipers swished back and forth. ▪ The horse's tail swished back and forth. [+ obj] ▪ The horse swished its tail back and forth.
— swish noun [singular]
▪ The horse shooed the flies away with a swish of its tail.
▪ The horse shooed the flies away with a swish of its tail.
