"втечняване" meaning in Bulgarian

{
  "forms": [
    {
      "form": "втечня́ване",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "vtečnjávane",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "втечня́ване"
      },
      "expansion": "втечня́ване • (vtečnjávane) 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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "vtečnjávam",
          "word": "втечня́вам"
        }
      ],
      "glosses": [
        "verbal noun of втечня́вам (vtečnjávam)"
      ],
      "id": "en-втечняване-bg-noun-o8Z-hT~c",
      "links": [
        [
          "втечня́вам",
          "втечнявам#Bulgarian"
        ]
      ],
      "tags": [
        "form-of",
        "noun-from-verb"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ftɛt͡ʃˈnʲa̟vɐnɛ]"
    }
  ],
  "word": "втечняване"
}

{
  "forms": [
    {
      "form": "втечня́ване",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "vtečnjávane",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "втечня́ване"
      },
      "expansion": "втечня́ване • (vtečnjávane) 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",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "form_of": [
        {
          "extra": "vtečnjávam",
          "word": "втечня́вам"
        }
      ],
      "glosses": [
        "verbal noun of втечня́вам (vtečnjávam)"
      ],
      "links": [
        [
          "втечня́вам",
          "втечнявам#Bulgarian"
        ]
      ],
      "tags": [
        "form-of",
        "noun-from-verb"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ftɛt͡ʃˈnʲa̟vɐnɛ]"
    }
  ],
  "word": "втечняване"
}