1. (n.) A nonplane curve whose tangents are all equally inclined to a given plane. The common helix is the curve formed by the thread of the ordinary screw. It is distinguished from the spiral, all the convolutions of which are in the plane.

2. (n.) A caulicule or little volute under the abacus of the Corinthian capital.

3. (n.) The incurved margin or rim of the external ear

4. (n.) A genus of land snails, including a large number of species.

cirrus coil corkscrew curl curlicue evolute gyre involute kink ringlet roll screw scroll spiral swirl tendril twirl twist volute volution vortex whirl whorl