防空 ぼうくう Meanings Noun air defense; air defence Kanji 防 defend. Read as ボウ. 空 sky. Read as クウ. Words containing 防空 防空壕 (ぼうくうごう) air-raid shelter 防空識別圏 (ぼうくうしきべつけん) air defense identification zone 防空砲 (ぼうくうほう) air defense artillery And 3 more. Jinuma: Japanese Dictionary · Word lists