noun (n)

• a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle(noun.shape)

  Synonym:
  spiral
  

  source: wordnet30
• a structure consisting of something wound in a continuous series of loops(noun.artifact)

  Synonym:
  coil, spiral, volute, whorl
  

  source: wordnet30
• type genus of the family Helicidae(noun.animal)

  Synonym:
  genus helix
  

  source: wordnet30
• 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.(noun)

  source: webster1913