"by the rood" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "by the rood",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "by the rood",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1577, Nicholas Breton, The Workes of a Young Wyt, London: Thomas Dawson and Thomas Gardyner",
          "text": "Sim[on]. I pray thee tell me now, coulde such a shrow as thou,\nContent thy selfe with such a sheepe as I, how sayst thou now?\nSus[an]. A sheepe, nay by the Roode, I rather would haue guest\nyou, more a Hog like, then a sheepe […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Used as an oath to emphasize the veracity of an associated statement; equivalent to \"I swear on Christ's cross.\""
      ],
      "id": "en-by_the_rood-en-prep_phrase-DnkTvdwX",
      "raw_glosses": [
        "(archaic) Used as an oath to emphasize the veracity of an associated statement; equivalent to \"I swear on Christ's cross.\""
      ],
      "related": [
        {
          "word": "swear on"
        },
        {
          "word": "swear upon"
        }
      ],
      "tags": [
        "archaic"
      ]
    }
  ],
  "word": "by the rood"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "by the rood",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "by the rood",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "related": [
    {
      "word": "swear on"
    },
    {
      "word": "swear upon"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with archaic senses",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1577, Nicholas Breton, The Workes of a Young Wyt, London: Thomas Dawson and Thomas Gardyner",
          "text": "Sim[on]. I pray thee tell me now, coulde such a shrow as thou,\nContent thy selfe with such a sheepe as I, how sayst thou now?\nSus[an]. A sheepe, nay by the Roode, I rather would haue guest\nyou, more a Hog like, then a sheepe […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Used as an oath to emphasize the veracity of an associated statement; equivalent to \"I swear on Christ's cross.\""
      ],
      "raw_glosses": [
        "(archaic) Used as an oath to emphasize the veracity of an associated statement; equivalent to \"I swear on Christ's cross.\""
      ],
      "tags": [
        "archaic"
      ]
    }
  ],
  "word": "by the rood"
}