Related Clues:
- Biological ring of color (Var.)
- Cactus bump
- Ring of color (Var.)
- Biological ring
- Ring of anatomy
- Small cavity, as around a cactus spine
- Prickly area of a prickly pear
- Cactus bud
- Part of the iris surrounding the pupil (Var.)
- Cactus spine source
- Pit left by an acne scar
- Space on a butterfly's wing
- Childhood disease mark
- Little pit
- Colored ring, in botany