ETYM Latin helix, Greek, to turn round; cf. Latin volvere, and Eng. volute, voluble.
Screw-shaped coil.
A curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle; SYN. spiral.
Any spiral-formed object; rim of outer ear; snail-shell; screw-thread.
In mathematics, a three-dimensional curve resembling a spring, corkscrew, or screw thread. It is generated by a line that encircles a cylinder or cone at a constant angle.

1. City in Oregon (USA); zip code 97835.
2. Type genus of the family Helicidae; Also called: genus Helix.