To swirl means to move in circles or spirals, like water spinning as it goes down a drain or steam rising from hot cocoa in twisting patterns. When you stir chocolate syrup into milk, you watch it swirl through the white liquid before mixing completely. Fallen leaves swirl in the wind, dancing in circles before settling on the ground.

The word captures a particular kind of circular motion that's flowing and continuous rather than rigid or mechanical. A ballerina might swirl across the stage, her dress spinning around her. Rumors can swirl through a school, spreading in unpredictable patterns as students whisper to each other.

As a noun, a swirl is the pattern itself: the swirl of cream in coffee, the swirl of colors in marble, or the distinctive swirl at the top of soft-serve ice cream. Fingerprints have unique swirls and loops that help identify people. The word suggests movement that's graceful and fluid, whether it's water, air, fabric, or even ideas moving through a group.