1. Arranged in or having the approximate shape of a flattened coil or spiral.
2. In mathematics, a surface in the form of a coil or screw.
3. A spiral geometric surface that resembles a thread on a screw.

A warped surface which may be generated by a straight line moving in such a manner that every point of the line will have a uniform motion in the direction of another fixed straight line, and at the same time a uniform angular motion around it.