Hair"breadth` (?), Hair's"breadth` ().
The diameter or breadth of a hair; a very small distance; sometimes, definitely, the forty-eighth part of an inch.
Every one could sling stones at an hairbreadth and not miss.
Judg. xx. 16
© Webster 1913.
Hair"breadth`, a.
Having the breadth of a hair; very narrow; as, a hairbreadth escape.
© Webster 1913.