Twisted curve

from The Collaborative International Dictionary of English v.0.48

Twisted \Twist"ed\, a.
   Contorted; crooked spirally; subjected to torsion; hence,
   perverted.
   [1913 Webster]

   {Twisted curve} (Geom.), a curve of double curvature. See
      {Plane curve}, under {Curve}.

   {Twisted surface} (Geom.), a surface described by a straight
      line moving according to any law whatever, yet so that the
      consecutive positions of the line shall not be in one
      plane; a warped surface.
      [1913 Webster]