"потъване" meaning in Bulgarian

{
  "forms": [
    {
      "form": "потъ́ване",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "potǎ́vane",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "потъ́ване"
      },
      "expansion": "потъ́ване • (potǎ́vane) n",
      "name": "bg-verbal noun"
    }
  ],
  "lang": "Bulgarian",
  "lang_code": "bg",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Bulgarian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "pot́ǎvam",
          "word": "пот́ъвам"
        }
      ],
      "glosses": [
        "verbal noun of пот́ъвам (pot́ǎvam)"
      ],
      "id": "en-потъване-bg-noun-u-gHmXsD",
      "links": [
        [
          "пот́ъвам",
          "потъвам#Bulgarian"
        ]
      ],
      "tags": [
        "form-of",
        "noun-from-verb"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[poˈtɤvɐnɛ]"
    }
  ],
  "word": "потъване"
}

{
  "forms": [
    {
      "form": "потъ́ване",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "potǎ́vane",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "потъ́ване"
      },
      "expansion": "потъ́ване • (potǎ́vane) n",
      "name": "bg-verbal noun"
    }
  ],
  "lang": "Bulgarian",
  "lang_code": "bg",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Bulgarian entries with incorrect language header",
        "Bulgarian lemmas",
        "Bulgarian neuter nouns",
        "Bulgarian nouns",
        "Bulgarian terms with IPA pronunciation",
        "Bulgarian verbal nouns"
      ],
      "form_of": [
        {
          "extra": "pot́ǎvam",
          "word": "пот́ъвам"
        }
      ],
      "glosses": [
        "verbal noun of пот́ъвам (pot́ǎvam)"
      ],
      "links": [
        [
          "пот́ъвам",
          "потъвам#Bulgarian"
        ]
      ],
      "tags": [
        "form-of",
        "noun-from-verb"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[poˈtɤvɐnɛ]"
    }
  ],
  "word": "потъване"
}