"Local Fluff" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "local",
        "3": "fluff"
      },
      "expansion": "local + fluff",
      "name": "compound"
    }
  ],
  "etymology_text": "local + fluff from the relative \"fluffiness\" of the local interstellar medium resulting in a low density cloud of matter in relation to the surrounding space",
  "head_templates": [
    {
      "args": {
        "head": "Local Fluff"
      },
      "expansion": "Local Fluff",
      "name": "en-proper-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Astronomy",
          "orig": "en:Astronomy",
          "parents": [
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A relatively dense region of interstellar space (containing our Solar System) that formed where the Local Bubble met another bubble, the Loop I Bubble"
      ],
      "id": "en-Local_Fluff-en-name-m3HmAhnS",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "interstellar",
          "interstellar"
        ],
        [
          "space",
          "space"
        ],
        [
          "Solar System",
          "Solar System"
        ],
        [
          "Local Bubble",
          "Local Bubble"
        ],
        [
          "Loop I Bubble",
          "Loop I Bubble"
        ]
      ],
      "raw_glosses": [
        "(astronomy) A relatively dense region of interstellar space (containing our Solar System) that formed where the Local Bubble met another bubble, the Loop I Bubble"
      ],
      "related": [
        {
          "word": "Local Interstellar Cloud"
        },
        {
          "word": "Local Bubble"
        },
        {
          "word": "Local Arm"
        },
        {
          "word": "Local Group"
        },
        {
          "word": "Local Supercluster"
        },
        {
          "word": "Local Volume"
        },
        {
          "word": "Local Wall"
        },
        {
          "word": "Local Filament"
        },
        {
          "word": "Local Void"
        }
      ],
      "synonyms": [
        {
          "word": "Local Interstellar Cloud"
        }
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ],
      "wikipedia": [
        "Local Fluff"
      ]
    }
  ],
  "word": "Local Fluff"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "local",
        "3": "fluff"
      },
      "expansion": "local + fluff",
      "name": "compound"
    }
  ],
  "etymology_text": "local + fluff from the relative \"fluffiness\" of the local interstellar medium resulting in a low density cloud of matter in relation to the surrounding space",
  "head_templates": [
    {
      "args": {
        "head": "Local Fluff"
      },
      "expansion": "Local Fluff",
      "name": "en-proper-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "related": [
    {
      "word": "Local Interstellar Cloud"
    },
    {
      "word": "Local Bubble"
    },
    {
      "word": "Local Arm"
    },
    {
      "word": "Local Group"
    },
    {
      "word": "Local Supercluster"
    },
    {
      "word": "Local Volume"
    },
    {
      "word": "Local Wall"
    },
    {
      "word": "Local Filament"
    },
    {
      "word": "Local Void"
    }
  ],
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English uncountable nouns",
        "en:Astronomy"
      ],
      "glosses": [
        "A relatively dense region of interstellar space (containing our Solar System) that formed where the Local Bubble met another bubble, the Loop I Bubble"
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "interstellar",
          "interstellar"
        ],
        [
          "space",
          "space"
        ],
        [
          "Solar System",
          "Solar System"
        ],
        [
          "Local Bubble",
          "Local Bubble"
        ],
        [
          "Loop I Bubble",
          "Loop I Bubble"
        ]
      ],
      "raw_glosses": [
        "(astronomy) A relatively dense region of interstellar space (containing our Solar System) that formed where the Local Bubble met another bubble, the Loop I Bubble"
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ],
      "wikipedia": [
        "Local Fluff"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Local Interstellar Cloud"
    }
  ],
  "word": "Local Fluff"
}