"sub-brown dwarf" meaning in English

{
  "forms": [
    {
      "form": "sub-brown dwarfs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sub-brown dwarf (plural sub-brown dwarfs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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": "Types of planets",
          "orig": "en:Types of planets",
          "parents": [
            "Planets",
            "Celestial bodies",
            "Space",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A planetary mass object, less massive than a brown dwarf star, and not in orbit around a star."
      ],
      "id": "en-sub-brown_dwarf-en-noun-nziInK4q",
      "links": [
        [
          "brown dwarf",
          "brown dwarf"
        ],
        [
          "star",
          "star"
        ]
      ],
      "related": [
        {
          "word": "brown dwarf"
        },
        {
          "word": "black dwarf"
        },
        {
          "word": "red dwarf"
        },
        {
          "word": "white dwarf"
        },
        {
          "word": "planemo"
        },
        {
          "word": "planetar"
        }
      ],
      "translations": [
        {
          "alt": "じゅんかっしょくわいせい",
          "code": "ja",
          "lang": "Japanese",
          "roman": "junkasshokuwaisei",
          "sense": "planetary mass object",
          "word": "準褐色矮星"
        }
      ],
      "wikipedia": [
        "sub-brown dwarf"
      ]
    }
  ],
  "word": "sub-brown dwarf"
}

{
  "forms": [
    {
      "form": "sub-brown dwarfs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sub-brown dwarf (plural sub-brown dwarfs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "brown dwarf"
    },
    {
      "word": "black dwarf"
    },
    {
      "word": "red dwarf"
    },
    {
      "word": "white dwarf"
    },
    {
      "word": "planemo"
    },
    {
      "word": "planetar"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Types of planets"
      ],
      "glosses": [
        "A planetary mass object, less massive than a brown dwarf star, and not in orbit around a star."
      ],
      "links": [
        [
          "brown dwarf",
          "brown dwarf"
        ],
        [
          "star",
          "star"
        ]
      ],
      "wikipedia": [
        "sub-brown dwarf"
      ]
    }
  ],
  "translations": [
    {
      "alt": "じゅんかっしょくわいせい",
      "code": "ja",
      "lang": "Japanese",
      "roman": "junkasshokuwaisei",
      "sense": "planetary mass object",
      "word": "準褐色矮星"
    }
  ],
  "word": "sub-brown dwarf"
}