"habit vert" meaning in French

{
  "forms": [
    {
      "form": "habits verts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-",
        "3": "habits verts"
      },
      "expansion": "habit vert m (usually uncountable, plural habits verts)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "the clothing worn by the members of the Institut de France"
      ],
      "id": "en-habit_vert-fr-noun-QaX3k565",
      "raw_glosses": [
        "(idiomatic) the clothing worn by the members of the Institut de France"
      ],
      "tags": [
        "idiomatic",
        "masculine",
        "uncountable",
        "usually"
      ],
      "wikipedia": [
        "fr:habit vert"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.bi vɛʁ/"
    }
  ],
  "word": "habit vert"
}

{
  "forms": [
    {
      "form": "habits verts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-",
        "3": "habits verts"
      },
      "expansion": "habit vert m (usually uncountable, plural habits verts)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French idioms",
        "French lemmas",
        "French masculine nouns",
        "French multiword terms",
        "French nouns",
        "French nouns with red links in their headword lines",
        "French terms with IPA pronunciation",
        "French uncountable nouns"
      ],
      "glosses": [
        "the clothing worn by the members of the Institut de France"
      ],
      "raw_glosses": [
        "(idiomatic) the clothing worn by the members of the Institut de France"
      ],
      "tags": [
        "idiomatic",
        "masculine",
        "uncountable",
        "usually"
      ],
      "wikipedia": [
        "fr:habit vert"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.bi vɛʁ/"
    }
  ],
  "word": "habit vert"
}