ひざう 膝を打つ Show inflections LinksSentence search for 膝を打つSentence search for ひざをうつSentence search for ひざを打つKanji details for 膝 and 打Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'tsu' ending1. to express sudden recognition and being impressed; to slap one's kneeOther formsひざを打つ 【ひざをうつ】 Discussions Log in to talk about this word.