the world > space > shape > curvature > series of curves > [noun] > winding curve(s) > thing having > a line (5)
An irregular, apparently meaningless mark produced by making a rapid line or stroke with a pen, paintbrush, etc.; a squiggle; a scrawled line or…
An irregular written or printed line or mark; a squiggle.
A wriggly twist or curve; esp. a wavy or twisting line drawn on a surface.