Definition of gyrations:
(n) :
(also figuratively) The act of turning or whirling, especially around a fixed axis or centre; a circular or spiral motion; rotation.
(n) :
(specifically, Euclidean geometry) A rotation around an axis which is not the centre of rotational symmetry; an eccentric or off-centre rotation.
(n) :
(neurology) The arrangement of convolutions of gyri in the cerebral cortex of the brain.
(n) :
(conchology) One of the whorls of a spiral univalve shell.