"Old Firm" meaning in English

{
  "forms": [
    {
      "form": "the Old Firm",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1",
        "head": "Old Firm"
      },
      "expansion": "the Old Firm",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "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": "Football (soccer)",
          "orig": "en:Football (soccer)",
          "parents": [
            "Football",
            "Ball games",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Collectively, the two Scottish football teams Rangers and Celtic, both based in Glasgow, which are the most successful teams in Scotland. They have a fierce and long-standing rivalry."
      ],
      "id": "en-Old_Firm-en-name-FSIM1i9m",
      "links": [
        [
          "soccer",
          "soccer"
        ],
        [
          "Glasgow",
          "Glasgow"
        ],
        [
          "rivalry",
          "rivalry"
        ]
      ],
      "raw_glosses": [
        "(soccer) Collectively, the two Scottish football teams Rangers and Celtic, both based in Glasgow, which are the most successful teams in Scotland. They have a fierce and long-standing rivalry."
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "soccer",
        "sports"
      ],
      "wikipedia": [
        "Old Firm"
      ]
    }
  ],
  "word": "Old Firm"
}

{
  "forms": [
    {
      "form": "the Old Firm",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1",
        "head": "Old Firm"
      },
      "expansion": "the Old Firm",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English uncountable nouns",
        "en:Football (soccer)"
      ],
      "glosses": [
        "Collectively, the two Scottish football teams Rangers and Celtic, both based in Glasgow, which are the most successful teams in Scotland. They have a fierce and long-standing rivalry."
      ],
      "links": [
        [
          "soccer",
          "soccer"
        ],
        [
          "Glasgow",
          "Glasgow"
        ],
        [
          "rivalry",
          "rivalry"
        ]
      ],
      "raw_glosses": [
        "(soccer) Collectively, the two Scottish football teams Rangers and Celtic, both based in Glasgow, which are the most successful teams in Scotland. They have a fierce and long-standing rivalry."
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "soccer",
        "sports"
      ],
      "wikipedia": [
        "Old Firm"
      ]
    }
  ],
  "word": "Old Firm"
}