"spreader bar" meaning in English

{
  "forms": [
    {
      "form": "spreader bars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "spreader bar (plural spreader bars)",
      "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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "BDSM",
          "orig": "en:BDSM",
          "parents": [
            "Sexuality",
            "Human behaviour",
            "Sex",
            "Human",
            "All topics",
            "Reproduction",
            "Fundamental",
            "Life",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A rod with cuffs or rope on both ends that is used to hold arms or legs a fixed distance apart."
      ],
      "id": "en-spreader_bar-en-noun-foJ1-1Gk",
      "links": [
        [
          "BDSM",
          "BDSM"
        ],
        [
          "rod",
          "rod"
        ],
        [
          "cuff",
          "cuff"
        ]
      ],
      "raw_glosses": [
        "(BDSM) A rod with cuffs or rope on both ends that is used to hold arms or legs a fixed distance apart."
      ],
      "topics": [
        "BDSM",
        "lifestyle",
        "sexuality"
      ],
      "wikipedia": [
        "spreader bar"
      ]
    }
  ],
  "word": "spreader bar"
}

{
  "forms": [
    {
      "form": "spreader bars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "spreader bar (plural spreader bars)",
      "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",
        "en:BDSM"
      ],
      "glosses": [
        "A rod with cuffs or rope on both ends that is used to hold arms or legs a fixed distance apart."
      ],
      "links": [
        [
          "BDSM",
          "BDSM"
        ],
        [
          "rod",
          "rod"
        ],
        [
          "cuff",
          "cuff"
        ]
      ],
      "raw_glosses": [
        "(BDSM) A rod with cuffs or rope on both ends that is used to hold arms or legs a fixed distance apart."
      ],
      "topics": [
        "BDSM",
        "lifestyle",
        "sexuality"
      ],
      "wikipedia": [
        "spreader bar"
      ]
    }
  ],
  "word": "spreader bar"
}