"elbow to elbow" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "elbow to elbow (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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          "parents": [
            "Reduplicated coordinated pairs",
            "Coordinated pairs",
            "Reduplications",
            "Terms by etymology"
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          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "In close proximity, side by side."
      ],
      "id": "en-elbow_to_elbow-en-adv-QOXIrhs9",
      "links": [
        [
          "side by side",
          "side by side"
        ]
      ],
      "related": [
        {
          "word": "shoulder-to-shoulder"
        }
      ],
      "tags": [
        "not-comparable"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "in close proximity, side by side",
          "word": "kyynärtuntumassa"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "in close proximity, side by side",
          "word": "ramię w ramię"
        }
      ]
    }
  ],
  "word": "elbow to elbow"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "elbow to elbow (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "related": [
    {
      "word": "shoulder-to-shoulder"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English reduplicated coordinated pairs",
        "English uncomparable adverbs",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with Polish translations"
      ],
      "glosses": [
        "In close proximity, side by side."
      ],
      "links": [
        [
          "side by side",
          "side by side"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "in close proximity, side by side",
      "word": "kyynärtuntumassa"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "in close proximity, side by side",
      "word": "ramię w ramię"
    }
  ],
  "word": "elbow to elbow"
}