a hair's breadth

US /ə ˈherz bredθ/
UK /ə ˈherz bredθ/
"a hair's breadth" picture
1.

間一髪, 紙一重

a very small amount or distance

:
He escaped the accident by a hair's breadth.
彼は間一髪で事故を免れた。
The two cars passed each other by only a hair's breadth.
2台の車は紙一重ですれ違った。