きのう 気嚢 LinksSentence search for 気嚢Sentence search for きのうSentence search for 気のうKanji details for 気 and 嚢Edit in JMdict Noun1. air sac (birds, insects, etc.)Noun2. gasbag (airship); envelopeOther forms気のう 【きのう】 Discussions Log in to talk about this word.