To move along the path of a spiral or helix.
To increase continually.
To cause something to spiral.
Helical, like a spiral.
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.
To twist round.
To pitch.
To rotate rapidly.
To perform a twirl.
A little twist of some substance; a swirl.
A movement where a person spins round elegantly; a pirouette.
Any rotating movement; a spin.
A prison guard.