"estrus" meaning in English

{
  "forms": [
    {
      "form": "estruses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "estrus (countable and uncountable, plural estruses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "oestrus"
        }
      ],
      "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 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1963, A. J. Sobrero, “Sperm Migration in the Female Genital Tract”, in Carl G. Hartman, editor, Mechanisms Concerned with Conception: Proceedings of a Symposium Prepared under the Auspices of the Population Council and the Planned Parenthood Federation of America, New York, N.Y.: The Macmillan Company, →LCCN, page 174:",
          "text": "Bovine cervical mucus is more suitable for precise chemical and physical studies because much larger quantities can be obtained—as much as 150 ml may often be harvested from a single cow during estrus.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative spelling of oestrus"
      ],
      "id": "en-estrus-en-noun-A76d3e9w",
      "links": [
        [
          "oestrus",
          "oestrus#English"
        ]
      ],
      "raw_glosses": [
        "(American spelling) Alternative spelling of oestrus"
      ],
      "tags": [
        "US",
        "alt-of",
        "alternative",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "estrus"
}

{
  "forms": [
    {
      "form": "estruses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "estrus (countable and uncountable, plural estruses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "oestrus"
        }
      ],
      "categories": [
        "American English forms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1963, A. J. Sobrero, “Sperm Migration in the Female Genital Tract”, in Carl G. Hartman, editor, Mechanisms Concerned with Conception: Proceedings of a Symposium Prepared under the Auspices of the Population Council and the Planned Parenthood Federation of America, New York, N.Y.: The Macmillan Company, →LCCN, page 174:",
          "text": "Bovine cervical mucus is more suitable for precise chemical and physical studies because much larger quantities can be obtained—as much as 150 ml may often be harvested from a single cow during estrus.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative spelling of oestrus"
      ],
      "links": [
        [
          "oestrus",
          "oestrus#English"
        ]
      ],
      "raw_glosses": [
        "(American spelling) Alternative spelling of oestrus"
      ],
      "tags": [
        "US",
        "alt-of",
        "alternative",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "estrus"
}