| Clue | Source | Date |
|---|---|---|
| Lobe in the brain that handles visual processing | ||
| Relating to the lower skull bone | ||
| Carbon and iodine identified in broken pieces of optical bone (9) | ||
| Relating to the back of the head | The Times Specialist Sunday | 24 Dec 2017 |
| Conservative, not Liberal political bust skull bone | The Telegraph Toughie | 07 Nov 2017 |
| __ lobe: brain area | LA Times Daily | 11 Jun 2015 |
| __ lobe: brain area | ||
| Head bone | ||
| Pertaining to the lower skull bone |