胸むねを張はる

expression, godan verb (-ru)

throw out one's chest; be puffed up with pride

Literally to push one's chest forward, often used figuratively to mean acting confidently or proudly. Can be used in both positive (justifiable pride) and negative (arrogance) contexts.

• 彼かれは胸むねを張はって会かい場じょうに入はいってきた。

  He walked into the venue with his chest puffed out.

• 自じ分ぶんの仕し事ごとに誇ほこりを持もって、胸むねを張はって生いきたい。

  I want to live with my chest held high, proud of my work.