一いっ本ぽん道みち

noun

straight road; direct unforked road

Describes a road or path that goes straight without branching. Often implies a single, uninterrupted route.

• この先さきは一いっ本ぽん道みちだから迷まよわないよ。

  It's a straight road from here, so you won't get lost.

• 山やまの中なかの一いっ本道ぽんみちをひたすら歩あるいた。

  I walked steadily along the straight mountain road.