兜の緒を締める

意味Nghĩa

1. cụm từ / thành ngữđộng từ nhóm 2 (一段)thành ngữ

   1.to brace oneself (e.g. for battle); to pull oneself together; to focus one's mind; to tighten the strings of one's helmet

   oft. as 勝って兜の緒を締めよ