"island dwarf" meaning in English

{
  "forms": [
    {
      "form": "island dwarfs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "island dwarf (plural island dwarfs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
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          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
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      "examples": [
        {
          "ref": "2018, Tim Flannery, Europe: A Natural History, page 208:",
          "text": "Wrangel lies 140 kilometres north of the Siberian mainland and is 7600 square kilometres in extent. Its mammoths were island dwarfs.",
          "type": "quote"
        }
      ],
      "glosses": [
        "An island-dwelling organism that has become smaller than its mainland counterparts; an organism that has undergone island dwarfism."
      ],
      "id": "en-island_dwarf-en-noun-6HP2zki3",
      "links": [
        [
          "organism",
          "organism"
        ],
        [
          "mainland",
          "mainland"
        ],
        [
          "counterpart",
          "counterpart"
        ],
        [
          "island dwarfism",
          "island dwarfism"
        ]
      ]
    }
  ],
  "word": "island dwarf"
}

{
  "forms": [
    {
      "form": "island dwarfs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "island dwarf (plural island dwarfs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2018, Tim Flannery, Europe: A Natural History, page 208:",
          "text": "Wrangel lies 140 kilometres north of the Siberian mainland and is 7600 square kilometres in extent. Its mammoths were island dwarfs.",
          "type": "quote"
        }
      ],
      "glosses": [
        "An island-dwelling organism that has become smaller than its mainland counterparts; an organism that has undergone island dwarfism."
      ],
      "links": [
        [
          "organism",
          "organism"
        ],
        [
          "mainland",
          "mainland"
        ],
        [
          "counterpart",
          "counterpart"
        ],
        [
          "island dwarfism",
          "island dwarfism"
        ]
      ]
    }
  ],
  "word": "island dwarf"
}