fingerbreadth

/ˈfɪŋɡərˌbrɛdθ/
noun
  1. A unit of length equal to the width of a finger, used for rough measurements.
    • The carpenter left a fingerbreadth of extra wood for sanding.
    • She measured the remaining space with a fingerbreadth to see if the book would fit.
    • The gap between the two boards was only a fingerbreadth wide.
Synonyms
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