"radial bone" meaning in English

{
  "forms": [
    {
      "form": "radial bones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "radial bone (plural radial bones)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Bones",
          "orig": "en:Bones",
          "parents": [
            "Skeleton",
            "Body parts",
            "Body",
            "Anatomy",
            "All topics",
            "Biology",
            "Medicine",
            "Fundamental",
            "Sciences",
            "Healthcare",
            "Health"
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          "source": "w"
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      ],
      "glosses": [
        "Synonym of radius (“a bone in the forearm”)"
      ],
      "id": "en-radial_bone-en-noun-2IkIh6Ij",
      "links": [
        [
          "radius",
          "radius#English"
        ]
      ],
      "synonyms": [
        {
          "extra": "a bone in the forearm",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "radius"
        }
      ]
    }
  ],
  "word": "radial bone"
}

{
  "forms": [
    {
      "form": "radial bones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "radial bone (plural radial bones)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
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        "en:Bones"
      ],
      "glosses": [
        "Synonym of radius (“a bone in the forearm”)"
      ],
      "links": [
        [
          "radius",
          "radius#English"
        ]
      ],
      "synonyms": [
        {
          "extra": "a bone in the forearm",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "radius"
        }
      ]
    }
  ],
  "word": "radial bone"
}