"yoker" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "yoke",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "yoke + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "yoke + -er",
  "forms": [
    {
      "form": "yokers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "yoker (plural yokers)",
      "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": "other",
          "name": "English terms suffixed with -er (agent noun)",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1871, Ernst Curtius, William Alfred Packard, The History of Greece, volume 2, page 481",
          "text": "His father Xanthippus (who on the shores of Ionia had obtained the first victory with Attic vessels of war) belonged to the clan of the Buzygæ (yokers of oxen), whose duty it was to watch over a sacred figure of Athene, the Palladium, and to perform primitive ceremonies relating to the introduction of agriculture.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who yokes."
      ],
      "id": "en-yoker-en-noun-~YZViyN8"
    }
  ],
  "word": "yoker"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "yoke",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "yoke + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "yoke + -er",
  "forms": [
    {
      "form": "yokers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "yoker (plural yokers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -er (agent noun)",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1871, Ernst Curtius, William Alfred Packard, The History of Greece, volume 2, page 481",
          "text": "His father Xanthippus (who on the shores of Ionia had obtained the first victory with Attic vessels of war) belonged to the clan of the Buzygæ (yokers of oxen), whose duty it was to watch over a sacred figure of Athene, the Palladium, and to perform primitive ceremonies relating to the introduction of agriculture.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who yokes."
      ]
    }
  ],
  "word": "yoker"
}