"red day" meaning in English

{
  "etymology_text": "Allusion to the colour of blood.",
  "forms": [
    {
      "form": "red days",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "red day (plural red days)",
      "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": "English euphemisms",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1994, Verena Stefan, Shedding and Literally Dreaming, page 68:",
          "text": "For fifteen years, every month, red days. I have my period; it belongs to me.",
          "type": "quote"
        },
        {
          "ref": "2019, Dr. Gajanan V. Madiwal, Contraceptives Hygiene and Pregnancy Care:",
          "text": "Is there any harm, if we indulge in sex during red days?",
          "type": "quote"
        }
      ],
      "glosses": [
        "A day during which a woman is menstruating."
      ],
      "id": "en-red_day-en-noun-YC~Tc15f",
      "links": [
        [
          "day",
          "day"
        ],
        [
          "woman",
          "woman"
        ],
        [
          "menstruating",
          "menstruate"
        ]
      ],
      "raw_glosses": [
        "(euphemistic) A day during which a woman is menstruating."
      ],
      "tags": [
        "euphemistic"
      ]
    }
  ],
  "word": "red day"
}

{
  "etymology_text": "Allusion to the colour of blood.",
  "forms": [
    {
      "form": "red days",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "red day (plural red days)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English euphemisms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1994, Verena Stefan, Shedding and Literally Dreaming, page 68:",
          "text": "For fifteen years, every month, red days. I have my period; it belongs to me.",
          "type": "quote"
        },
        {
          "ref": "2019, Dr. Gajanan V. Madiwal, Contraceptives Hygiene and Pregnancy Care:",
          "text": "Is there any harm, if we indulge in sex during red days?",
          "type": "quote"
        }
      ],
      "glosses": [
        "A day during which a woman is menstruating."
      ],
      "links": [
        [
          "day",
          "day"
        ],
        [
          "woman",
          "woman"
        ],
        [
          "menstruating",
          "menstruate"
        ]
      ],
      "raw_glosses": [
        "(euphemistic) A day during which a woman is menstruating."
      ],
      "tags": [
        "euphemistic"
      ]
    }
  ],
  "word": "red day"
}