"weightiest" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "superlative adjective"
      },
      "expansion": "weightiest",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1960 January, “New reading on railways”, in Trains Illustrated, page 26",
          "text": "THE CONCISE ENCYCLOPAEDIA OF WORLD RAILWAY LOCOMOTIVES. Edited by P. Ransome-Wallis. Hutchinson. 50s.\nA gaudy jacket, remarkably out of keeping with the contents, camouflages the weightiest and meatiest work on a railway topic since the war.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "most weighty",
          "word": "weighty"
        }
      ],
      "glosses": [
        "superlative form of weighty: most weighty"
      ],
      "id": "en-weightiest-en-adj-2JC-IBok",
      "links": [
        [
          "weighty",
          "weighty#English"
        ]
      ],
      "tags": [
        "form-of",
        "superlative"
      ]
    }
  ],
  "word": "weightiest"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "superlative adjective"
      },
      "expansion": "weightiest",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English non-lemma forms",
        "English superlative adjectives",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1960 January, “New reading on railways”, in Trains Illustrated, page 26",
          "text": "THE CONCISE ENCYCLOPAEDIA OF WORLD RAILWAY LOCOMOTIVES. Edited by P. Ransome-Wallis. Hutchinson. 50s.\nA gaudy jacket, remarkably out of keeping with the contents, camouflages the weightiest and meatiest work on a railway topic since the war.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "most weighty",
          "word": "weighty"
        }
      ],
      "glosses": [
        "superlative form of weighty: most weighty"
      ],
      "links": [
        [
          "weighty",
          "weighty#English"
        ]
      ],
      "tags": [
        "form-of",
        "superlative"
      ]
    }
  ],
  "word": "weightiest"
}