"arrière-garde" meaning in French

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "ru",
            "2": "арьергард",
            "bor": "1"
          },
          "expansion": "→ Russian: арьергард (arʹjergard)\n→ Georgian: არიერგარდი (ariergardi)",
          "name": "desctree"
        }
      ],
      "text": "→ Russian: арьергард (arʹjergard)\n→ Georgian: არიერგარდი (ariergardi)"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "arrière-",
        "3": "garde"
      },
      "expansion": "arrière- + garde",
      "name": "af"
    }
  ],
  "etymology_text": "From arrière- + garde.",
  "forms": [
    {
      "form": "arrière-gardes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "arrière-garde f (plural arrière-gardes)",
      "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"
        },
        {
          "kind": "other",
          "name": "French terms prefixed with arrière-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Military",
          "orig": "fr:Military",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "rearguard"
      ],
      "id": "en-arrière-garde-fr-noun-n91KcbnG",
      "links": [
        [
          "military",
          "military"
        ],
        [
          "rearguard",
          "rearguard"
        ]
      ],
      "raw_glosses": [
        "(military) rearguard"
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.ʁjɛʁ.ɡaʁd/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-arrière-garde.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/fe/LL-Q150_%28fra%29-LoquaxFR-arri%C3%A8re-garde.wav/LL-Q150_%28fra%29-LoquaxFR-arri%C3%A8re-garde.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/fe/LL-Q150_%28fra%29-LoquaxFR-arri%C3%A8re-garde.wav/LL-Q150_%28fra%29-LoquaxFR-arri%C3%A8re-garde.wav.ogg"
    }
  ],
  "word": "arrière-garde"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "ru",
            "2": "арьергард",
            "bor": "1"
          },
          "expansion": "→ Russian: арьергард (arʹjergard)\n→ Georgian: არიერგარდი (ariergardi)",
          "name": "desctree"
        }
      ],
      "text": "→ Russian: арьергард (arʹjergard)\n→ Georgian: არიერგარდი (ariergardi)"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "arrière-",
        "3": "garde"
      },
      "expansion": "arrière- + garde",
      "name": "af"
    }
  ],
  "etymology_text": "From arrière- + garde.",
  "forms": [
    {
      "form": "arrière-gardes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "arrière-garde f (plural arrière-gardes)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French 3-syllable words",
        "French countable nouns",
        "French entries with incorrect language header",
        "French feminine nouns",
        "French lemmas",
        "French multiword terms",
        "French nouns",
        "French terms prefixed with arrière-",
        "French terms with IPA pronunciation",
        "Pages with 2 entries",
        "Pages with entries",
        "fr:Military"
      ],
      "glosses": [
        "rearguard"
      ],
      "links": [
        [
          "military",
          "military"
        ],
        [
          "rearguard",
          "rearguard"
        ]
      ],
      "raw_glosses": [
        "(military) rearguard"
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a.ʁjɛʁ.ɡaʁd/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-arrière-garde.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/fe/LL-Q150_%28fra%29-LoquaxFR-arri%C3%A8re-garde.wav/LL-Q150_%28fra%29-LoquaxFR-arri%C3%A8re-garde.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/fe/LL-Q150_%28fra%29-LoquaxFR-arri%C3%A8re-garde.wav/LL-Q150_%28fra%29-LoquaxFR-arri%C3%A8re-garde.wav.ogg"
    }
  ],
  "word": "arrière-garde"
}