To flog; lash.To flourish; brandish; make quick, cutting motions with; switch.To affect by swishing: as, to swish off the heads of flowers with a cane.To move, or make a movement, with a swash or flourish, or with a sound like the washing of small waves on the shore, or of swift movement through the air, of which the word swish is imitative.n. A sound as of water lapping the shore, or of swift movement through the air; a rustling.n. A swish-broom.In a swishing manner, or with a swishing sound; with a swish.