Crossword Genius

Cavity in the body (5)

Ross

I believe the answer is:

sinus

(Other definitions for sinus that I've seen before include "Cavity in the facial bones" , "Passage in the head" , "Hole in the head" , "Hollow space" , "Nasal cavity" .)

I've seen this clue in the Sydney Morning Herald.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.