1. Noun, Noun, used as a suffix

   1.

   (mountain) pass; highest point on a mountain road; ridge

2. Noun

   2.

   peak (e.g. of summer); worst (e.g. of an illness); crisis; critical point

3. Wikipedia definition

   3.

   Mountain pass

Example sentences

• 患者さんは峠を越しました。

  The patient is now out of danger.

• 猛暑の峠は越えたようだが、日中はまだまだ暑い。

  We have already passed the peak of the summer heat, but it's still hot during the day.