"one flesh" meaning in English

{
  "etymology_text": "Biblical phrase, found for example in versions of Genesis 2:24 and Mark 10:8.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "one flesh (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "become one flesh"
        }
      ],
      "examples": [
        {
          "ref": "1840, James Fenimore Cooper, chapter 15, in The Pathfinder:",
          "text": "\"This is reasonable and natural,\" returned Pathfinder; \". . . A woman would be likely to follow the man to whom she had plighted faith, and husband and wife are one flesh.\"",
          "type": "quote"
        },
        {
          "ref": "1875, Lord Alfred Tennyson, Queen Mary: A Drama, act V:",
          "text": "Mary: Have not I been the fast friend of your life\nSince mine began, and it was thought we two\nMight make one flesh, and cleave unto each other\nAs man and wife?",
          "type": "quote"
        },
        {
          "ref": "1911, John Galsworthy, “A Christian”, in Inn of Tranquility:",
          "text": "We know Christ's saying of the married that they are one flesh!",
          "type": "quote"
        }
      ],
      "glosses": [
        "Two people united by marriage."
      ],
      "id": "en-one_flesh-en-noun-wPKTPwEl",
      "links": [
        [
          "unite",
          "unite"
        ],
        [
          "marriage",
          "marriage"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) Two people united by marriage."
      ],
      "tags": [
        "idiomatic",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-one flesh.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/67/En-au-one_flesh.ogg/En-au-one_flesh.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/67/En-au-one_flesh.ogg"
    }
  ],
  "word": "one flesh"
}

{
  "derived": [
    {
      "word": "become one flesh"
    }
  ],
  "etymology_text": "Biblical phrase, found for example in versions of Genesis 2:24 and Mark 10:8.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "one flesh (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms derived from the Bible",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1840, James Fenimore Cooper, chapter 15, in The Pathfinder:",
          "text": "\"This is reasonable and natural,\" returned Pathfinder; \". . . A woman would be likely to follow the man to whom she had plighted faith, and husband and wife are one flesh.\"",
          "type": "quote"
        },
        {
          "ref": "1875, Lord Alfred Tennyson, Queen Mary: A Drama, act V:",
          "text": "Mary: Have not I been the fast friend of your life\nSince mine began, and it was thought we two\nMight make one flesh, and cleave unto each other\nAs man and wife?",
          "type": "quote"
        },
        {
          "ref": "1911, John Galsworthy, “A Christian”, in Inn of Tranquility:",
          "text": "We know Christ's saying of the married that they are one flesh!",
          "type": "quote"
        }
      ],
      "glosses": [
        "Two people united by marriage."
      ],
      "links": [
        [
          "unite",
          "unite"
        ],
        [
          "marriage",
          "marriage"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) Two people united by marriage."
      ],
      "tags": [
        "idiomatic",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-one flesh.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/67/En-au-one_flesh.ogg/En-au-one_flesh.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/67/En-au-one_flesh.ogg"
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  ],
  "word": "one flesh"
}