"vaca lechera" meaning in Spanish

{
  "forms": [
    {
      "form": "vacas lecheras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "vaca lechera f (plural vacas lecheras)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "46 54",
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "63 37",
          "kind": "topical",
          "langcode": "es",
          "name": "Money",
          "orig": "es:Money",
          "parents": [
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "milker (cow)"
      ],
      "id": "en-vaca_lechera-es-noun-0f2OAUDw",
      "links": [
        [
          "milker",
          "milker"
        ]
      ],
      "tags": [
        "feminine"
      ]
    },
    {
      "categories": [
        {
          "_dis": "46 54",
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "cash cow"
      ],
      "id": "en-vaca_lechera-es-noun-1ETkFTYN",
      "links": [
        [
          "cash cow",
          "cash cow"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) cash cow"
      ],
      "synonyms": [
        {
          "word": "mina de oro"
        }
      ],
      "tags": [
        "feminine",
        "idiomatic"
      ]
    }
  ],
  "word": "vaca lechera"
}

{
  "categories": [
    "Spanish countable nouns",
    "Spanish entries with incorrect language header",
    "Spanish feminine nouns",
    "Spanish lemmas",
    "Spanish multiword terms",
    "Spanish nouns",
    "es:Money"
  ],
  "forms": [
    {
      "form": "vacas lecheras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "vaca lechera f (plural vacas lecheras)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "milker (cow)"
      ],
      "links": [
        [
          "milker",
          "milker"
        ]
      ],
      "tags": [
        "feminine"
      ]
    },
    {
      "categories": [
        "Spanish idioms"
      ],
      "glosses": [
        "cash cow"
      ],
      "links": [
        [
          "cash cow",
          "cash cow"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) cash cow"
      ],
      "synonyms": [
        {
          "word": "mina de oro"
        }
      ],
      "tags": [
        "feminine",
        "idiomatic"
      ]
    }
  ],
  "word": "vaca lechera"
}