Noun

• S: (n) spiral, volute (ornament consisting of a curve on a plane that winds around a center with an increasing distance from the center)
• S: (n) coil, spiral, volute, whorl, helix (a structure consisting of something wound in a continuous series of loops) "a coil of rope"

Adjective

• S: (adj) coiling, helical, spiral, spiraling, volute, voluted, whorled, turbinate (in the shape of a coil)