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crust noun

  /kɹʌst/
  • A more solid, dense or hard layer on a surface or boundary.
  • The external, hardened layer of certain foodstuffs, including most types of bread, fried meat, etc.
croûte
  • (Britain, Australia, New Zealand, Ireland, Canada, Northern US) A slice of bread cut from the end of a loaf; the heel.
  • (geology) The outermost layer of the lithosphere of the Earth.
  • (astronomy, by extension) The outermost layer of any terrestrial planet.
croûte, écorce
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