- helix, spiral - a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle
--1 is a kind of curve, curved shape
--1 has particulars: double helix - coil, spiral, volute, whorl, helix - a structure consisting of something wound in a continuous series of loops; "a coil of rope"
--2 is a kind of structure, construction
--2 has particulars: hank - Helix, genus Helix - type genus of the family Helicidae
--3 is a kind of mollusk genus
--3 is a member of Helicidae, family Helicidae
--3 has members:edible snail, Helix pomatia; garden snail; brown snail, Helix aspersa; Helix hortensis