"all hollow" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "all hollow (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1811, Dictionary of Vulgar Tongue",
          "text": "He was beat all hollow, i.e. he had no chance of conquering.\nIt was all hollow, or a hollow thing, it was a decided thing from the beginning.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "As a foregone conclusion."
      ],
      "id": "en-all_hollow-en-adv-cPF86ALo",
      "raw_glosses": [
        "(idiomatic) As a foregone conclusion."
      ],
      "tags": [
        "idiomatic",
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-all hollow.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/a0/En-au-all_hollow.ogg/En-au-all_hollow.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/a/a0/En-au-all_hollow.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "all hollow"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "all hollow (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English terms with audio links",
        "English terms with quotations",
        "English uncomparable adverbs",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1811, Dictionary of Vulgar Tongue",
          "text": "He was beat all hollow, i.e. he had no chance of conquering.\nIt was all hollow, or a hollow thing, it was a decided thing from the beginning.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "As a foregone conclusion."
      ],
      "raw_glosses": [
        "(idiomatic) As a foregone conclusion."
      ],
      "tags": [
        "idiomatic",
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-all hollow.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/a0/En-au-all_hollow.ogg/En-au-all_hollow.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/a/a0/En-au-all_hollow.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "all hollow"
}