| Answer | Crossword Clue |
|---|---|
| MAT | Ring surface |
| CANVAS | Ring surface |
| TOROID | Ring-shaped surface |
| tanbark | surface covered with pieces of tanbark, esp. a circus ring |
| annulets | ring, usually colored, around or on the surface of an organ |
| annulet | ring, usually colored, around or on the surface of an organ |
| labra | ring of cartilage about the edge of a joint surface of a bone |
| labrum | ring of cartilage about the edge of a joint surface of a bone |
