Hair that is curled into conical, drill-shaped ringlets. If the hair is curled but not conical and pointy, it should be tagged ringlets instead.
Can be combined with twintails to get the twin drills style. The Japanese term for this type of hair style is 縦ロール (tate roll).
The following tags implicate this tag: drill_ponytail, drill_sidelocks, quad_drills, side_drill, and twin_drills (learn more).