こうこう 膏肓 LinksSentence search for 膏肓Sentence search for こうこうSentence search for こうもうKanji details for 膏 and 肓Edit in JMdict Noun1. innermost part of the body (where a disease cannot be treated)See also 病膏肓に入る やまいこうこうにいるOther forms膏肓 【こうもう】Notesこうもう: Irregular kana usage. Discussions Log in to talk about this word.