"trou noir" meaning in French

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  "etymology_text": "Calque of English black hole.",
  "forms": [
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      "form": "trous noirs",
      "tags": [
        "plural"
      ]
    }
  ],
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  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
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        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Astrophysics",
          "orig": "fr:Astrophysics",
          "parents": [
            "Astronomy",
            "Physics",
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
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        }
      ],
      "glosses": [
        "black hole (celestial body)"
      ],
      "id": "en-trou_noir-fr-noun-93CORoZe",
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          "astrophysics",
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          "black hole"
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      "raw_glosses": [
        "(astrophysics) black hole (celestial body)"
      ],
      "related": [
        {
          "word": "trou blanc"
        },
        {
          "word": "disque d’accrétion"
        },
        {
          "word": "ergosphère"
        },
        {
          "word": "horizon des événements"
        },
        {
          "roman": "vitesse d’échappement, vitesse d’évasion",
          "word": "vitesse de libération"
        }
      ],
      "tags": [
        "masculine"
      ],
      "topics": [
        "astrophysics"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/tʁu nwaʁ/"
    },
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  ],
  "word": "trou noir"
}

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      "expansion": "Calque of English black hole",
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  ],
  "etymology_text": "Calque of English black hole.",
  "forms": [
    {
      "form": "trous noirs",
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    }
  ],
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  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "related": [
    {
      "word": "trou blanc"
    },
    {
      "word": "disque d’accrétion"
    },
    {
      "word": "ergosphère"
    },
    {
      "word": "horizon des événements"
    },
    {
      "roman": "vitesse d’échappement, vitesse d’évasion",
      "word": "vitesse de libération"
    }
  ],
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          "astrophysics",
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        ],
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          "black hole",
          "black hole"
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        "(astrophysics) black hole (celestial body)"
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      "tags": [
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      "topics": [
        "astrophysics"
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  ],
  "sounds": [
    {
      "ipa": "/tʁu nwaʁ/"
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  "word": "trou noir"
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