"swivel joint" meaning in English

{
  "forms": [
    {
      "form": "swivel joints",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "swivel joint (plural swivel joints)",
      "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"
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          "source": "w"
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        },
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          "kind": "other",
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        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
          "name": "Terms with Maori translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "a joint that may move horizontally such as the neck vertebrae"
      ],
      "id": "en-swivel_joint-en-noun-Z85lUvw1",
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "kiertonivel"
        },
        {
          "code": "mi",
          "lang": "Maori",
          "sense": "Translations",
          "word": "pona kaurori"
        }
      ]
    }
  ],
  "word": "swivel joint"
}

{
  "forms": [
    {
      "form": "swivel joints",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "swivel joint (plural swivel joints)",
      "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",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with Maori translations",
        "Translation table header lacks gloss"
      ],
      "glosses": [
        "a joint that may move horizontally such as the neck vertebrae"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "kiertonivel"
    },
    {
      "code": "mi",
      "lang": "Maori",
      "sense": "Translations",
      "word": "pona kaurori"
    }
  ],
  "word": "swivel joint"
}