副ふく鼻び腔こうMeaningsNoun1. paranasal sinus; paranasal cavity; sinus paranasales (ふくびくう is used by medical professionals)Other readings副ふく鼻び腔くうKanji used副secondary鼻nose腔body cavityPitch accentふくびこうComposed of副ふくassistant; associate; vice-; sub-; deputy; substitute; auxiliary; supplementary; additional; collateral; …Noun鼻び腔こうnasal cavityNoun