"остротой" meaning in Russian

{
  "etymology_number": 1,
  "forms": [
    {
      "form": "острото́й",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ostrotój",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "noun form",
        "g": "f-in",
        "head": "острото́й"
      },
      "expansion": "острото́й • (ostrotój) f inan",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "form_of": [
        {
          "extra": "ostrotá",
          "word": "острота́"
        }
      ],
      "glosses": [
        "instrumental singular of острота́ (ostrotá)"
      ],
      "id": "en-остротой-ru-noun-uI7KYVzO",
      "links": [
        [
          "острота́",
          "острота#Russian"
        ]
      ],
      "tags": [
        "form-of",
        "instrumental",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɐstrɐˈtoj]"
    }
  ],
  "word": "остротой"
}

{
  "etymology_number": 2,
  "forms": [
    {
      "form": "остро́той",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ostrótoj",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "noun form",
        "g": "f-in",
        "head": "остро́той"
      },
      "expansion": "остро́той • (ostrótoj) f inan",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "31 69",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "extra": "ostróta",
          "word": "остро́та"
        }
      ],
      "glosses": [
        "instrumental singular of остро́та (ostróta)"
      ],
      "id": "en-остротой-ru-noun-Kjbiciys",
      "links": [
        [
          "остро́та",
          "острота#Russian"
        ]
      ],
      "tags": [
        "form-of",
        "instrumental",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɐˈstrotəj]"
    }
  ],
  "word": "остротой"
}

{
  "categories": [
    "Russian 3-syllable words",
    "Russian entries with incorrect language header",
    "Russian non-lemma forms",
    "Russian noun forms",
    "Russian terms with IPA pronunciation"
  ],
  "etymology_number": 1,
  "forms": [
    {
      "form": "острото́й",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ostrotój",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "noun form",
        "g": "f-in",
        "head": "острото́й"
      },
      "expansion": "острото́й • (ostrotój) f inan",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "form_of": [
        {
          "extra": "ostrotá",
          "word": "острота́"
        }
      ],
      "glosses": [
        "instrumental singular of острота́ (ostrotá)"
      ],
      "links": [
        [
          "острота́",
          "острота#Russian"
        ]
      ],
      "tags": [
        "form-of",
        "instrumental",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɐstrɐˈtoj]"
    }
  ],
  "word": "остротой"
}

{
  "categories": [
    "Russian 3-syllable words",
    "Russian entries with incorrect language header",
    "Russian non-lemma forms",
    "Russian noun forms",
    "Russian terms with IPA pronunciation"
  ],
  "etymology_number": 2,
  "forms": [
    {
      "form": "остро́той",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ostrótoj",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "noun form",
        "g": "f-in",
        "head": "остро́той"
      },
      "expansion": "остро́той • (ostrótoj) f inan",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "form_of": [
        {
          "extra": "ostróta",
          "word": "остро́та"
        }
      ],
      "glosses": [
        "instrumental singular of остро́та (ostróta)"
      ],
      "links": [
        [
          "остро́та",
          "острота#Russian"
        ]
      ],
      "tags": [
        "form-of",
        "instrumental",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɐˈstrotəj]"
    }
  ],
  "word": "остротой"
}