"làu" meaning in Vietnamien

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs en vietnamien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Vietnamien",
      "orig": "vietnamien",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Vietnamien",
  "lang_code": "vi",
  "paronyms": [
    {
      "word": "láu"
    },
    {
      "word": "lau"
    },
    {
      "word": "lâu"
    },
    {
      "word": "lầu"
    },
    {
      "word": "lẩu"
    },
    {
      "word": "lậu"
    }
  ],
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en vietnamien",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en vietnamien à traduire",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Đọc thuộc làu",
          "translation": "Réciter sans hésitation"
        },
        {
          "ref": "redoublement ; sens plus fort",
          "text": "làu làu"
        }
      ],
      "glosses": [
        "Sans hésitation."
      ],
      "id": "fr-làu-vi-adj-8BfZSgmz"
    }
  ],
  "sounds": [
    {
      "ipa": "\\lau˧˨\\"
    }
  ],
  "word": "làu"
}

{
  "categories": [
    "Adjectifs en vietnamien",
    "vietnamien"
  ],
  "lang": "Vietnamien",
  "lang_code": "vi",
  "paronyms": [
    {
      "word": "láu"
    },
    {
      "word": "lau"
    },
    {
      "word": "lâu"
    },
    {
      "word": "lầu"
    },
    {
      "word": "lẩu"
    },
    {
      "word": "lậu"
    }
  ],
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "categories": [
        "Exemples en vietnamien",
        "Exemples en vietnamien à traduire"
      ],
      "examples": [
        {
          "text": "Đọc thuộc làu",
          "translation": "Réciter sans hésitation"
        },
        {
          "ref": "redoublement ; sens plus fort",
          "text": "làu làu"
        }
      ],
      "glosses": [
        "Sans hésitation."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\lau˧˨\\"
    }
  ],
  "word": "làu"
}