"черна дупка" meaning in Bulgarian

{
  "forms": [
    {
      "form": "че́рна ду́пка",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "čérna dúpka",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "no-table-tags",
      "source": "declension",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "bg-ndecl",
      "source": "declension",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "че́рна ду́пка",
      "roman": "čérna dúpka",
      "source": "declension",
      "tags": [
        "indefinite",
        "singular"
      ]
    },
    {
      "form": "че́рни ду́пки",
      "roman": "čérni dúpki",
      "source": "declension",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "че́рната ду́пка",
      "roman": "čérnata dúpka",
      "source": "declension",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "че́рните ду́пки",
      "roman": "čérnite dúpki",
      "source": "declension",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "че́рна ду́пка",
        "2": "f"
      },
      "expansion": "че́рна ду́пка • (čérna dúpka) f",
      "name": "bg-noun"
    }
  ],
  "inflection_templates": [
    {
      "args": {
        "1": "че́рна<#> ду́пка<>"
      },
      "name": "bg-ndecl"
    }
  ],
  "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"
        },
        {
          "kind": "topical",
          "langcode": "bg",
          "name": "Astronomy",
          "orig": "bg:Astronomy",
          "parents": [
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "bg",
          "name": "Black holes",
          "orig": "bg:Black holes",
          "parents": [
            "Astronomy",
            "Astrophysics",
            "Gravity",
            "Relativity",
            "Sciences",
            "Space",
            "Physics",
            "Acceleration",
            "Mechanics",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "black hole"
      ],
      "id": "en-черна_дупка-bg-noun-lKKAY9zQ",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "black hole",
          "black hole"
        ]
      ],
      "raw_glosses": [
        "(astronomy) black hole"
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ],
      "wikipedia": [
        "bg:черна дупка"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈt͡ʃɛrnɐ ˈdupkɐ]"
    }
  ],
  "word": "черна дупка"
}

{
  "forms": [
    {
      "form": "че́рна ду́пка",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "čérna dúpka",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "no-table-tags",
      "source": "declension",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "bg-ndecl",
      "source": "declension",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "че́рна ду́пка",
      "roman": "čérna dúpka",
      "source": "declension",
      "tags": [
        "indefinite",
        "singular"
      ]
    },
    {
      "form": "че́рни ду́пки",
      "roman": "čérni dúpki",
      "source": "declension",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "че́рната ду́пка",
      "roman": "čérnata dúpka",
      "source": "declension",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "че́рните ду́пки",
      "roman": "čérnite dúpki",
      "source": "declension",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "че́рна ду́пка",
        "2": "f"
      },
      "expansion": "че́рна ду́пка • (čérna dúpka) f",
      "name": "bg-noun"
    }
  ],
  "inflection_templates": [
    {
      "args": {
        "1": "че́рна<#> ду́пка<>"
      },
      "name": "bg-ndecl"
    }
  ],
  "lang": "Bulgarian",
  "lang_code": "bg",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Bulgarian entries with incorrect language header",
        "Bulgarian feminine nouns",
        "Bulgarian lemmas",
        "Bulgarian multiword terms",
        "Bulgarian nouns",
        "Bulgarian terms with IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries",
        "bg:Astronomy",
        "bg:Black holes"
      ],
      "glosses": [
        "black hole"
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "black hole",
          "black hole"
        ]
      ],
      "raw_glosses": [
        "(astronomy) black hole"
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ],
      "wikipedia": [
        "bg:черна дупка"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈt͡ʃɛrnɐ ˈdupkɐ]"
    }
  ],
  "word": "черна дупка"
}