1. (a.) Spiral; curved, like the spire of a univalve shell.

2. (a.) Shaped like a snail shell; pertaining to the Helicidae, or Snail family.

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

ambagious circuitous circumlocutory cochlear cochleate convoluted convolutional corkscrew corkscrewy flexuose flexuous helical helicoid involute involuted involutional labyrinthine mazy meandering meandrous rivose rivulose roundabout ruffled screw-shaped scrolled serpentine sinuate sinuose sinuous snaky spiral spiroid torsional tortile tortuous turbinal turbinate turning twisting twisty verticillate volute voluted whorled winding wreathlike wreathy