スイッチバック

noun, noun or participle which takes 'suru', intransitive verb

switchback; zigzag

Primarily a railway term for a track layout that reverses direction on a steep slope; also used for zigzag paths or roads. Can be used as a noun or with する to describe the action of moving in a switchback pattern.

• この山さん岳がく鉄てつ道どうにはスイッチバックがいくつもある。

  This mountain railway has several switchbacks.

• バスは急きゅうな坂さかをスイッチバック