"bla-bla" meaning in French

{
  "etymology_text": "The word is given as onomatopoeic or possibly related to blaguer by le Trésor de la langue française.\nIt appears in the French language in 1945 and could also be a borrowing from earlier English blah.",
  "forms": [
    {
      "form": "bla-bla",
      "tags": [
        "plural",
        "traditional"
      ]
    },
    {
      "form": "bla-blas",
      "tags": [
        "error-unknown-tag",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#",
        "3": "+",
        "pqual": "traditional",
        "pqual2": "post-1990 spelling"
      },
      "expansion": "bla-bla m (plural (traditional) bla-bla or (post-1990 spelling) bla-blas)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "blablater"
        }
      ],
      "examples": [
        {
          "english": "His speech is a pretentious blah to present banalities.",
          "text": "Son discours, c’est un blabla prétentieux pour présenter des banalités.",
          "type": "example"
        }
      ],
      "glosses": [
        "blah, chit-chat, meaningless talk intended to deceive"
      ],
      "id": "en-bla-bla-fr-noun-0pMEtLu4",
      "links": [
        [
          "blah",
          "blah"
        ],
        [
          "chit-chat",
          "chit-chat"
        ]
      ],
      "synonyms": [
        {
          "word": "baratin"
        },
        {
          "word": "blabla"
        },
        {
          "word": "bla bla"
        },
        {
          "word": "bla bla bla"
        },
        {
          "word": "bla-bla-bla"
        },
        {
          "word": "blablabla"
        }
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bla.bla/"
    },
    {
      "audio": "LL-Q150 (fra)-DSwissK-bla-bla.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/7/75/LL-Q150_%28fra%29-DSwissK-bla-bla.wav/LL-Q150_%28fra%29-DSwissK-bla-bla.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/7/75/LL-Q150_%28fra%29-DSwissK-bla-bla.wav/LL-Q150_%28fra%29-DSwissK-bla-bla.wav.ogg"
    }
  ],
  "word": "bla-bla"
}

{
  "derived": [
    {
      "word": "blablater"
    }
  ],
  "etymology_text": "The word is given as onomatopoeic or possibly related to blaguer by le Trésor de la langue française.\nIt appears in the French language in 1945 and could also be a borrowing from earlier English blah.",
  "forms": [
    {
      "form": "bla-bla",
      "tags": [
        "plural",
        "traditional"
      ]
    },
    {
      "form": "bla-blas",
      "tags": [
        "error-unknown-tag",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#",
        "3": "+",
        "pqual": "traditional",
        "pqual2": "post-1990 spelling"
      },
      "expansion": "bla-bla m (plural (traditional) bla-bla or (post-1990 spelling) bla-blas)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French 2-syllable words",
        "French countable nouns",
        "French entries with incorrect language header",
        "French lemmas",
        "French masculine nouns",
        "French multiword terms",
        "French nouns",
        "French terms with IPA pronunciation",
        "French terms with usage examples",
        "Pages with 4 entries"
      ],
      "examples": [
        {
          "english": "His speech is a pretentious blah to present banalities.",
          "text": "Son discours, c’est un blabla prétentieux pour présenter des banalités.",
          "type": "example"
        }
      ],
      "glosses": [
        "blah, chit-chat, meaningless talk intended to deceive"
      ],
      "links": [
        [
          "blah",
          "blah"
        ],
        [
          "chit-chat",
          "chit-chat"
        ]
      ],
      "synonyms": [
        {
          "word": "baratin"
        }
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bla.bla/"
    },
    {
      "audio": "LL-Q150 (fra)-DSwissK-bla-bla.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/7/75/LL-Q150_%28fra%29-DSwissK-bla-bla.wav/LL-Q150_%28fra%29-DSwissK-bla-bla.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/7/75/LL-Q150_%28fra%29-DSwissK-bla-bla.wav/LL-Q150_%28fra%29-DSwissK-bla-bla.wav.ogg"
    }
  ],
  "synonyms": [
    {
      "word": "blabla"
    },
    {
      "word": "bla bla"
    },
    {
      "word": "bla bla bla"
    },
    {
      "word": "bla-bla-bla"
    },
    {
      "word": "blablabla"
    }
  ],
  "word": "bla-bla"
}