The Collaborative International Dictionary of English v.0.48:

Volute \Vo*lute"\, n. [F. volute (cf. It. voluta), L. voluta,
   from volvere, volutum, to roll. See Voluble.]
   [1913 Webster]
   1. (Arch.) A spiral scroll which forms the chief feature of
      the Ionic capital, and which, on a much smaller scale, is
      a feature in the Corinthian and Composite capitals. See
      Illust. of Capital, also Helix, and Stale.
      [1913 Webster]

   2. (Zool.) A spiral turn, as in certain shells.
      [1913 Webster]

   3. (Zool.) Any voluta.
      [1913 Webster]

   Volute spiring, a spring formed of a spiral scroll of
      plate, rod, or wire, extended or extensible in the
      direction of the axis of the coil, in which direction its
      elastic force is exerted and employed.
      [1913 Webster]

WordNet (r) 3.0 (2006):

volute
    adj 1: in the shape of a coil [syn: coiling, helical,
           spiral, spiraling, volute, voluted, whorled,
           turbinate]
    n 1: ornament consisting of a curve on a plane that winds around
         a center with an increasing distance from the center [syn:
         spiral, volute]
    2: a structure consisting of something wound in a continuous
       series of loops; "a coil of rope" [syn: coil, spiral,
       volute, whorl, helix]

Moby Thesaurus II by Grady Ward, 1.0:

37 Moby Thesaurus words for "volute":
   anfractuous, cirrus, cochlear, cochleate, coil, corkscrew,
   corkscrewy, curl, curlicue, evolute, gyre, helical, helicoid,
   helix, involute, kink, ringlet, roll, screw, screw-shaped, scroll,
   scrolled, spiral, spiroid, swirl, tendril, turbinal, turbinate,
   twirl, twist, verticillate, voluted, volution, vortex, whirl,
   whorl, whorled