JMdict: 2260380

背筋を伸ばす 【せすじをのばす】

  1. [exp,v5s] to straighten up one's back (e.g. stand up straight, sit up straight); to hold one's head high
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
背 Stature, Height, Back, Behind, Disobey, Defy, Go Back On, Rebel ハイ せ, せい, そむ.く, そむ.ける 6
筋 Muscle, Sinew, Tendon, Fiber, Plot, Plan, Descent キン すじ 6
伸 Expand, Stretch, Extend, Lengthen, Increase シン の.びる, の.ばす, の.べる, の.す