"swingtree" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "swing",
        "3": "tree"
      },
      "expansion": "swing + tree",
      "name": "compound"
    }
  ],
  "etymology_text": "swing + tree",
  "forms": [
    {
      "form": "swingtrees",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "swingtree (plural swingtrees)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1858, James Slight, Robert Scott Burn, The Book of Farm Implements and Machines",
          "text": "In this mode of yoking, the horses work in unicorn-team, the middle horse pulling by the soam- chain, instead of the swingtree",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The bar of a carriage to which the traces are fastened."
      ],
      "id": "en-swingtree-en-noun-aScZ9KKQ",
      "links": [
        [
          "bar",
          "bar"
        ],
        [
          "carriage",
          "carriage"
        ],
        [
          "traces",
          "traces"
        ],
        [
          "fasten",
          "fasten"
        ]
      ],
      "synonyms": [
        {
          "word": "draught bar"
        },
        {
          "word": "singletree"
        },
        {
          "word": "swingletree"
        },
        {
          "word": "whiffletree"
        },
        {
          "word": "whippletree"
        }
      ]
    }
  ],
  "word": "swingtree"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "swing",
        "3": "tree"
      },
      "expansion": "swing + tree",
      "name": "compound"
    }
  ],
  "etymology_text": "swing + tree",
  "forms": [
    {
      "form": "swingtrees",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "swingtree (plural swingtrees)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1858, James Slight, Robert Scott Burn, The Book of Farm Implements and Machines",
          "text": "In this mode of yoking, the horses work in unicorn-team, the middle horse pulling by the soam- chain, instead of the swingtree",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The bar of a carriage to which the traces are fastened."
      ],
      "links": [
        [
          "bar",
          "bar"
        ],
        [
          "carriage",
          "carriage"
        ],
        [
          "traces",
          "traces"
        ],
        [
          "fasten",
          "fasten"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "draught bar"
    },
    {
      "word": "singletree"
    },
    {
      "word": "swingletree"
    },
    {
      "word": "whiffletree"
    },
    {
      "word": "whippletree"
    }
  ],
  "word": "swingtree"
}