# by a hair's breadth

> English word · Prep_phrase

## Definitions
1. By a narrow margin.

## Etymology
See hair's breadth.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/by-a-hair-s-breadth