"ballon d'essai" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "fr",
        "3": "ballon d'essai"
      },
      "expansion": "French ballon d’essai",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from French ballon d’essai.",
  "forms": [
    {
      "form": "ballons d'essai",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ballons d'essai",
        "nolinkhead": "1"
      },
      "expansion": "ballon d'essai (plural ballons d'essai)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1971, Keith Thomas, Religion and the Decline of Magic, Folio Society, published 2012, page 193",
          "text": "James II may even have planned the reintroduction of the ceremony, for in his reign the old order of service was resurrected and issued in print, as a ballon d'essai, though the Revolution prevented matters being taken any further.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A policy put forward to test reactions; something designed to test the waters, an experimental measure."
      ],
      "id": "en-ballon_d'essai-en-noun-G9ZYGKJb",
      "links": [
        [
          "policy",
          "policy"
        ],
        [
          "test",
          "test"
        ],
        [
          "test the waters",
          "test the waters"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌbalɒ̃ dɛˈseɪ/",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "ballon d'essai"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "fr",
        "3": "ballon d'essai"
      },
      "expansion": "French ballon d’essai",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from French ballon d’essai.",
  "forms": [
    {
      "form": "ballons d'essai",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ballons d'essai",
        "nolinkhead": "1"
      },
      "expansion": "ballon d'essai (plural ballons d'essai)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms borrowed from French",
        "English terms derived from French",
        "English terms with IPA pronunciation",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1971, Keith Thomas, Religion and the Decline of Magic, Folio Society, published 2012, page 193",
          "text": "James II may even have planned the reintroduction of the ceremony, for in his reign the old order of service was resurrected and issued in print, as a ballon d'essai, though the Revolution prevented matters being taken any further.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A policy put forward to test reactions; something designed to test the waters, an experimental measure."
      ],
      "links": [
        [
          "policy",
          "policy"
        ],
        [
          "test",
          "test"
        ],
        [
          "test the waters",
          "test the waters"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌbalɒ̃ dɛˈseɪ/",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "ballon d'essai"
}