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.
A helix.
A section of track that forms a circle and crosses over itself, used for gaining height in mountainous territory.
A self-sustaining process with a lot of momentum involved, so it is difficult to accelerate or stop it at once.
A curve that is the locus of a point that rotates about a fixed point while continuously increasing its distance from that point.
Helical, like a spiral.
To increase continually.
To cause something to spiral.
To move along the path of a spiral or helix.