"tiers-monde" meaning in French

{
  "forms": [
    {
      "form": "tiers-mondes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "tiers-monde m (plural tiers-mondes)",
      "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"
        }
      ],
      "derived": [
        {
          "word": "tiers-mondiste"
        },
        {
          "word": "tiers-mondisme"
        }
      ],
      "glosses": [
        "Third World (developing countries)"
      ],
      "id": "en-tiers-monde-fr-noun-sc-f7Vbs",
      "links": [
        [
          "Third World",
          "Third World"
        ]
      ],
      "tags": [
        "masculine"
      ],
      "wikipedia": [
        "fr:tiers-monde"
      ]
    }
  ],
  "word": "tiers-monde"
}

{
  "derived": [
    {
      "word": "tiers-mondiste"
    },
    {
      "word": "tiers-mondisme"
    }
  ],
  "forms": [
    {
      "form": "tiers-mondes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "tiers-monde m (plural tiers-mondes)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French lemmas",
        "French masculine nouns",
        "French multiword terms",
        "French nouns"
      ],
      "glosses": [
        "Third World (developing countries)"
      ],
      "links": [
        [
          "Third World",
          "Third World"
        ]
      ],
      "tags": [
        "masculine"
      ],
      "wikipedia": [
        "fr:tiers-monde"
      ]
    }
  ],
  "word": "tiers-monde"
}