Related Clues:
- Channel between brain and skull
- Cavity in skull
- Channel in the skull
- Passage in the head
- Cavity in the head
- Cavity in body (connecting to nose)
- Air-filled cavity of the skull
- One may get congested
- Pressure point, at times
- Respiratory duct
- Oft-congested spot
- Common blockage locale
- Air-filled cavity in one's head
- Decongestant target
- Hole in one's head?