🇬🇧 en es 🇪🇸

touchstone noun

  /ˈtʌt͡ʃstəʊn/
  • (figurative, by extension) A standard of comparison or evaluation.
 norma
  • A stone used to verify the quality of gold alloys by rubbing them in order to leave a visible trace.
 piedra de toque, toque
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