鼻び腔こうTop 35000MeaningsNoun1. nasal cavity (read びくう in medical science)Other readings鼻び腔くうKanji used鼻nose腔body cavityPitch accentびこうUsed in vocabulary副ふく鼻び腔こうparanasal sinus; paranasal cavity; sinus paranasalesNoun副ふく鼻び腔こう炎えんsinusitisNoun