"тону" meaning in Russian

{
  "etymology_number": 1,
  "forms": [
    {
      "form": "тону́",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tonú",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "verb form",
        "head": "тону́"
      },
      "expansion": "тону́ • (tonú)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "_dis": "10 90",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "8 92",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "13 87",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "extra": "tonútʹ",
          "word": "тону́ть"
        }
      ],
      "glosses": [
        "first-person singular present indicative imperfective of тону́ть (tonútʹ)"
      ],
      "id": "en-тону-ru-verb-QdpAhL9F",
      "links": [
        [
          "тону́ть",
          "тонуть#Russian"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "imperfective",
        "indicative",
        "present",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tɐˈnu]"
    }
  ],
  "word": "тону"
}

{
  "etymology_number": 2,
  "forms": [
    {
      "form": "то́ну",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tónu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "noun form",
        "g": "m-in",
        "head": "то́ну"
      },
      "expansion": "то́ну • (tónu) m inan",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "form_of": [
        {
          "extra": "ton",
          "word": "тон"
        }
      ],
      "glosses": [
        "dative singular of тон (ton)"
      ],
      "id": "en-тону-ru-noun-IxgWdpl2",
      "links": [
        [
          "тон",
          "тон#Russian"
        ]
      ],
      "tags": [
        "dative",
        "form-of",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈtonʊ]"
    }
  ],
  "word": "тону"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Russian 2-syllable words",
    "Russian entries with incorrect language header",
    "Russian non-lemma forms",
    "Russian noun forms",
    "Russian terms with IPA pronunciation",
    "Russian verb forms"
  ],
  "etymology_number": 1,
  "forms": [
    {
      "form": "тону́",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tonú",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "verb form",
        "head": "тону́"
      },
      "expansion": "тону́ • (tonú)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "verb",
  "senses": [
    {
      "form_of": [
        {
          "extra": "tonútʹ",
          "word": "тону́ть"
        }
      ],
      "glosses": [
        "first-person singular present indicative imperfective of тону́ть (tonútʹ)"
      ],
      "links": [
        [
          "тону́ть",
          "тонуть#Russian"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "imperfective",
        "indicative",
        "present",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tɐˈnu]"
    }
  ],
  "word": "тону"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Russian 2-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": "то́ну",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tónu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "noun form",
        "g": "m-in",
        "head": "то́ну"
      },
      "expansion": "то́ну • (tónu) m inan",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "form_of": [
        {
          "extra": "ton",
          "word": "тон"
        }
      ],
      "glosses": [
        "dative singular of тон (ton)"
      ],
      "links": [
        [
          "тон",
          "тон#Russian"
        ]
      ],
      "tags": [
        "dative",
        "form-of",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈtonʊ]"
    }
  ],
  "word": "тону"
}