ansa                    a looped handle.
gyrose                  covered with wavy lines.
sulcus                  a groove or furrow.
Grolier                 pertaining to a decorative design of
                        interlaced bands used in bookbinding.
guilloche               an ornamental pattern of interlacing
                        curvilinear lines, esp. a band of two ribbons
                        twining around circular voids.
oblate/prolate          (of a spheroid) squashed or stretched, respectively.
cissoid/sistroid        the biconcave and biconvex quadrants, respectively, 
                        of the intersection between two curves.
running dog             a scroll in a stylized wave pattern (also
                        |Vitruvian scroll|). 
synclastic              (math.) having principal curvatures of the
                        same sign at a given point: egg-like, rather
                        than saddle-like.  (ant. |anticlastic|)
wimple                  (Scot.) a fold or wrinkle, a curve or bend; to
                        wrap; to ripple; to follow a curving course.
gyrovague               a wandering monk.