"higher-pitched" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "comparative adjective"
      },
      "expansion": "higher-pitched",
      "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": "1942 March, “The Why and the Wherefore: A Rebuilt Brighton 0-4-2 Tank”, in Railway Magazine, page 95",
          "text": "The Marsh rebuilding, with the higher-pitched and larger boiler and new standard boiler mountings, completely altered the appearance of the engine, which in its last guise was a very handsome machine; but unsteadiness in running at speeds over 50 m.p.h. resulted in no further such conversions being made.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "more high-pitched",
          "word": "high-pitched"
        }
      ],
      "glosses": [
        "comparative form of high-pitched: more high-pitched"
      ],
      "id": "en-higher-pitched-en-adj-vyeuseIa",
      "links": [
        [
          "high-pitched",
          "high-pitched#English"
        ]
      ],
      "tags": [
        "comparative",
        "form-of"
      ]
    }
  ],
  "word": "higher-pitched"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "comparative adjective"
      },
      "expansion": "higher-pitched",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English comparative adjectives",
        "English entries with incorrect language header",
        "English non-lemma forms",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1942 March, “The Why and the Wherefore: A Rebuilt Brighton 0-4-2 Tank”, in Railway Magazine, page 95",
          "text": "The Marsh rebuilding, with the higher-pitched and larger boiler and new standard boiler mountings, completely altered the appearance of the engine, which in its last guise was a very handsome machine; but unsteadiness in running at speeds over 50 m.p.h. resulted in no further such conversions being made.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "more high-pitched",
          "word": "high-pitched"
        }
      ],
      "glosses": [
        "comparative form of high-pitched: more high-pitched"
      ],
      "links": [
        [
          "high-pitched",
          "high-pitched#English"
        ]
      ],
      "tags": [
        "comparative",
        "form-of"
      ]
    }
  ],
  "word": "higher-pitched"
}