hair pencil

== English == === Noun === hair pencil (plural hair pencils) An artist's brush made from a few fine hairs. (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.