Definify.com

Webster 1828 Edition

Hair-breadth

HA'IR-BREADTH

,

Noun.

[See Breadth.] The diameter or breadth of a hair; a very small distance.

--Seven hundred chosen men left-handed; every one could

sling stones to a hair-breadth. Judges 20.

It is used as an adjective; as a hair-breadth escape. But in New England, it is generally hair's breadth.