gyration

Short definition from Wiktionary

Noun

1. 1
   The act of turning or whirling, especially around a fixed axis or centre; a circular or spiral motion; rotation.
2. 2
   The act of turning or whirling, especially around a fixed axis or centre; a circular or spiral motion; rotation: A rotation around an axis which is not the centre of rotational symmetry; an eccentric or off-centre rotation.
3. 3
   One of the whorls of a spiral univalve shell.
4. 4
   The arrangement of convolutions of gyri in the cerebral cortex of the brain.