"tree brown" meaning in English

{
  "forms": [
    {
      "form": "tree browns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tree brown (plural tree browns)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Satyrine butterflies",
          "orig": "en:Satyrine butterflies",
          "parents": [
            "Nymphalid butterflies",
            "Butterflies",
            "Insects",
            "Arthropods",
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            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
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          "source": "w"
        }
      ],
      "glosses": [
        "Any of various nymphalid butterflies of the genus Lethe. Other members of this genus are called foresters and wood browns."
      ],
      "id": "en-tree_brown-en-noun-RtrKKoeE",
      "links": [
        [
          "nymphalid",
          "nymphalid"
        ],
        [
          "Lethe",
          "Lethe"
        ],
        [
          "forester",
          "forester"
        ],
        [
          "wood brown",
          "wood brown"
        ]
      ]
    }
  ],
  "word": "tree brown"
}

{
  "forms": [
    {
      "form": "tree browns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tree brown (plural tree browns)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English countable nouns",
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        "en:Satyrine butterflies"
      ],
      "glosses": [
        "Any of various nymphalid butterflies of the genus Lethe. Other members of this genus are called foresters and wood browns."
      ],
      "links": [
        [
          "nymphalid",
          "nymphalid"
        ],
        [
          "Lethe",
          "Lethe"
        ],
        [
          "forester",
          "forester"
        ],
        [
          "wood brown",
          "wood brown"
        ]
      ]
    }
  ],
  "word": "tree brown"
}