hairline

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English

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Etymology

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From hair +‎ line.

Pronunciation

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Noun

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hairline (plural hairlines)

  1. The line along one's forehead where hair starts growing.
    It's just a receding hairline — it's not like you're going bald.
    • 1984 May 28, Claudia Wallis, “Gone Today, but Hair Tomorrow”, in Time[1]:
      Using a Danish technique, doctors can now insert plugs of just one or two hairs in front of an implanted area to simulate a natural hairline.
  2. A very thin line in writing, drawing, or typography.
    1. A very thin fissure.
      While inspecting the new house, we found a few hairlines in one of the walls.
      • 2012, The Onion Book of Known Knowledge, page 102:
        Yup, you got a crack in it [the cylinder head] all right. Just a hairline, but that damn thing is gonna cause a big headache later.
  3. A fishing line made from hair.

Translations

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Adjective

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hairline

  1. (figurative) Very thin, as thin as a hair.
    There was a hairline crack in the airplane's wing.