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watchword noun

  /ˈwɒt͡ʃwɜː(ɹ)d/
  • A word used as a motto, as expressive of a principle, belief, or rule of action; a rallying cry.
  • (military, security) A prearranged reply to the challenge of a sentry or a guard; a password or signal by which friends can be known from enemies.
mot d'ordre
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