Gyre

(jīr), n. [Lat. gyrus, Gr. γῦρος, from γυρός, round; It. & Sp. giro, Fr. gir.] A circular motion, or a circle described by a moving body; a turn or revolution; a circuit. “Still expanding and ascending gyres.” E. B. Browning.

Quick and more quick he spins in giddy gyres. Dryden.