"vieille branche" meaning in French

{
  "forms": [
    {
      "form": "vieilles branches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-",
        "3": "+"
      },
      "expansion": "vieille branche m (usually uncountable, plural vieilles branches)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Age",
          "orig": "fr:Age",
          "parents": [
            "Human",
            "Time",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "old chap, old friend, bugger (affectionate term of address for a man)"
      ],
      "id": "en-vieille_branche-fr-noun-hpO2kANh",
      "links": [
        [
          "old chap",
          "old chap"
        ],
        [
          "old friend",
          "old friend"
        ],
        [
          "bugger",
          "bugger"
        ]
      ],
      "raw_glosses": [
        "(informal) old chap, old friend, bugger (affectionate term of address for a man)"
      ],
      "tags": [
        "informal",
        "masculine",
        "uncountable",
        "usually"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/vjɛj bʁɑ̃ʃ/"
    }
  ],
  "word": "vieille branche"
}

{
  "forms": [
    {
      "form": "vieilles branches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-",
        "3": "+"
      },
      "expansion": "vieille branche m (usually uncountable, plural vieilles branches)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French informal terms",
        "French lemmas",
        "French masculine nouns",
        "French multiword terms",
        "French nouns",
        "French nouns with red links in their headword lines",
        "French terms with IPA pronunciation",
        "French uncountable nouns",
        "fr:Age"
      ],
      "glosses": [
        "old chap, old friend, bugger (affectionate term of address for a man)"
      ],
      "links": [
        [
          "old chap",
          "old chap"
        ],
        [
          "old friend",
          "old friend"
        ],
        [
          "bugger",
          "bugger"
        ]
      ],
      "raw_glosses": [
        "(informal) old chap, old friend, bugger (affectionate term of address for a man)"
      ],
      "tags": [
        "informal",
        "masculine",
        "uncountable",
        "usually"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/vjɛj bʁɑ̃ʃ/"
    }
  ],
  "word": "vieille branche"
}