To revolve rapidly about a center or an axis. See Synonyms at turn. To rotate or spin rapidly: The dancer whirled across the stage. To turn rapidly, changing direction; wheel: She whirled around to face him. To have the sensation of spinning; reel: My head is whirling with data. To move circularly and rapidly in varied, random directions: The wind whirled across the steppes. To cause to rotate or turn rapidly: whirl a baton. To move or drive in a circular or curving course. To drive at high speed: whirled the motorcycle around the corner. Obsolete To hurl. The act of rotating or revolving rapidly. Something, such as a cloud of dust, that whirls or is whirled. A state of confusion; tumult. A swift succession or round of events: the social whirl. A state of mental confusion or giddiness; dizziness: My head is in a whirl. Informal A short trip or ride. Informal A brief or experimental try: Let's give the plan a whirl.