A spiral-shaped shell, especially that of a snail.
The complex, spirally coiled, tapered cavity of the inner ear of higher vertebrates, which contains the organ of Corti and in which sound vibrations are converted into nerve impulses.
One of the whorls of a spiral univalve shell.
The arrangement of convolutions of gyri in the cerebral cortex of the brain.
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.