Like mountain roads, 7 letters
Air-filled skull cavity, 5 letters
Commonly congested passage, 5 letters
Congested area, maybe, 5 letters
Congested area, sometimes, 5 letters
Congestion location, 5 letters
Cranial cavity connected to the nasal passages, 5 letters
It may be blocked when you have a cold, 5 letters
It may be congested, 5 letters
Kind of pressure that can cause headaches, 5 letters
Nasal congestion locale, 5 letters
Oft-congested passage, 5 letters
One may get congested, 5 letters
One of your cavities, 5 letters
Part of the head that may be congested, 5 letters
Pressure point, at times, 5 letters
You need this like you need a hole in the head, 5 letters
Any of various air-filled cavities especially in the bones of the skull, 5 letters
A wide channel containing blood, 5 letters
Does not have the coating of an ordinary blood vessel, 5 letters
An abnormal passage leading from a suppurating cavity to the body surface, 5 letters
Congestion site, at times, 11 letters
Allergies may congest them, 7 letters
Allergies often affect them, 7 letters
Cavities that dentists don't fill, 7 letters
Decongestant's workplace, 7 letters
They may be blocked, 7 letters
They may be cleared with a spray, 7 letters
They're often sensitive to allergens, 7 letters
Small blood cavity in organ tissue, 8 letters
Tiny endothelium-lined passages for blood in the tissue of an organ, 8 letters
The curve of y=sin x, 8 letters