* Sound: The basketball swished through the net, making a satisfying sound.
* Movement: The dancer's skirt swished as she spun across the stage.
* Action: He swished the paintbrush across the canvas, creating a bold stroke.
* Figurative: Her new dress swished with elegance, making her feel confident.
* Informal: "Hey, swish that coffee over here!" (meaning, hand me the coffee)
As you can see, "swish" can describe a sound, a movement, an action, or even be used informally as a verb.