Air-Filled Cavities in the Face and Skull
This page is the CodyCross answer for the clue below from Futuristic City , Group 994, Puzzle 2 (Supersonic Transport).
Question is: Air-Filled Cavities in the Face and Skull
and the answer is: SINUSES
Word Meaning:
SINUSES — plural of sinus
Definitions from Wiktionary.