"swap horses in midstream" meaning in English

{
  "forms": [
    {
      "form": "swaps horses in midstream",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "swapping horses in midstream",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "swapped horses in midstream",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "swapped horses in midstream",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*",
        "head": "swap horses in midstream"
      },
      "expansion": "swap horses in midstream (third-person singular simple present swaps horses in midstream, present participle swapping horses in midstream, simple past and past participle swapped horses in midstream)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "alt_of": [
        {
          "word": "change horses in midstream"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of change horses in midstream"
      ],
      "id": "en-swap_horses_in_midstream-en-verb-HCKx1izV",
      "links": [
        [
          "change horses in midstream",
          "change horses in midstream#English"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) Alternative form of change horses in midstream"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "idiomatic"
      ]
    }
  ],
  "word": "swap horses in midstream"
}

{
  "forms": [
    {
      "form": "swaps horses in midstream",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "swapping horses in midstream",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "swapped horses in midstream",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "swapped horses in midstream",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*",
        "head": "swap horses in midstream"
      },
      "expansion": "swap horses in midstream (third-person singular simple present swaps horses in midstream, present participle swapping horses in midstream, simple past and past participle swapped horses in midstream)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "alt_of": [
        {
          "word": "change horses in midstream"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English verbs"
      ],
      "glosses": [
        "Alternative form of change horses in midstream"
      ],
      "links": [
        [
          "change horses in midstream",
          "change horses in midstream#English"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) Alternative form of change horses in midstream"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "idiomatic"
      ]
    }
  ],
  "word": "swap horses in midstream"
}