"top-grade" meaning in All languages combined

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "top-grade (not comparable)",
      "name": "en-adj"
    }
  ],
  "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 September, “The Select Committee on Nationalised Industries examines British Railways”, in Trains Illustrated, page 524",
          "text": "The principles are that decisions on matters of public interest may not be taken at a Regional level; that inter-Regional working implies a high degree of standardisation of stock and operation; and that the work of top-grade technical staff should be available at B.T.C. level for all Regions.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Of the highest quality."
      ],
      "id": "en-top-grade-en-adj-FZsmDdNi",
      "related": [
        {
          "word": "high-grade"
        },
        {
          "word": "low-grade"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "top-grade"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "top-grade (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "high-grade"
    },
    {
      "word": "low-grade"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations",
        "English uncomparable adjectives"
      ],
      "examples": [
        {
          "ref": "1960 September, “The Select Committee on Nationalised Industries examines British Railways”, in Trains Illustrated, page 524",
          "text": "The principles are that decisions on matters of public interest may not be taken at a Regional level; that inter-Regional working implies a high degree of standardisation of stock and operation; and that the work of top-grade technical staff should be available at B.T.C. level for all Regions.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Of the highest quality."
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "top-grade"
}