ひざ 膝をつく Show inflections LinksSentence search for 膝をつくSentence search for ひざをつくSentence search for 膝を突くKanji details for 膝Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ku' ending1. to fall to one's knees; to go down on one's knees (e.g. to express respect)Other forms膝を突く 【ひざをつく】 Discussions Log in to talk about this word.