hair pencil

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English

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Noun

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hair pencil (plural hair pencils)

  1. An artist's brush made from a few fine hairs.
  2. (zoology) A pheromone signalling structure found in lepidopteran males.
    • 1912, Jean-Henri Fabre, translated by Alexander Teixeira de Mattos, The Life of the Spider chapter 10
      the thread ends suddenly in a filmy hair-pencil, a tuft, whose parts remain disjoined, just as they come from the spinneret's rose.