"nau" meaning in Vietnamien

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en vietnamien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Vietnamien",
      "orig": "vietnamien",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Vietnamien",
  "lang_code": "vi",
  "paronyms": [
    {
      "word": "náu"
    },
    {
      "word": "nâu"
    },
    {
      "word": "nấu"
    },
    {
      "word": "nẫu"
    },
    {
      "word": "nậu"
    }
  ],
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Xem đau nau."
      ],
      "id": "fr-nau-vi-noun-s8nwL5vT"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en vietnamien",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Termes littéraires en vietnamien",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Termes vieillis en vietnamien",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Nguyễn Gia Thiều",
          "text": "Tử sinh kinh cụ làm nau mấy lần",
          "translation": "Les épouvantes causées par les morts et les naissances ont bien des fois provoqué des souffrances."
        }
      ],
      "glosses": [
        ", Douleur; souffrance."
      ],
      "id": "fr-nau-vi-noun-6lDLP3wm",
      "tags": [
        "dated",
        "literary"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\nau˦\\"
    }
  ],
  "word": "nau"
}

{
  "categories": [
    "Noms communs en vietnamien",
    "vietnamien"
  ],
  "lang": "Vietnamien",
  "lang_code": "vi",
  "paronyms": [
    {
      "word": "náu"
    },
    {
      "word": "nâu"
    },
    {
      "word": "nấu"
    },
    {
      "word": "nẫu"
    },
    {
      "word": "nậu"
    }
  ],
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Xem đau nau."
      ]
    },
    {
      "categories": [
        "Exemples en vietnamien",
        "Termes littéraires en vietnamien",
        "Termes vieillis en vietnamien"
      ],
      "examples": [
        {
          "ref": "Nguyễn Gia Thiều",
          "text": "Tử sinh kinh cụ làm nau mấy lần",
          "translation": "Les épouvantes causées par les morts et les naissances ont bien des fois provoqué des souffrances."
        }
      ],
      "glosses": [
        ", Douleur; souffrance."
      ],
      "tags": [
        "dated",
        "literary"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\nau˦\\"
    }
  ],
  "word": "nau"
}