"when pigs fly" meaning in 英語

{
  "categories": [
    {
      "kind": "other",
      "name": "英語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語 成句",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "非推奨のテンプレートを使用しているページ",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "成句",
  "senses": [
    {
      "examples": [
        {
          "text": "\"Thinking again?\" the Duchess asked, with another dig of her sharp little chin."
        },
        {
          "text": "\"I've a right to think,\" said Alice sharply, for she was beginning to feel a little worried."
        },
        {
          "text": "\"Just about as much right,\" said the Duchess, \"as pigs have to fly....\"",
          "translation": "「十分に正当ではあるわよ」、公爵夫人言った。「豚が空を飛ぶ位にはね」（ルイス・キャロル『不思議の国のアリス』第9章）"
        }
      ],
      "glosses": [
        "（「ありえないこと」を意味して）豚が空を飛んだら、空飛ぶ豚。"
      ],
      "id": "ja-when_pigs_fly-en-phrase-UOZMUtpA"
    }
  ],
  "tags": [
    "idiomatic"
  ],
  "word": "when pigs fly"
}

{
  "categories": [
    "英語",
    "英語 terms with redundant head parameter",
    "英語 成句",
    "非推奨のテンプレートを使用しているページ"
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "成句",
  "senses": [
    {
      "examples": [
        {
          "text": "\"Thinking again?\" the Duchess asked, with another dig of her sharp little chin."
        },
        {
          "text": "\"I've a right to think,\" said Alice sharply, for she was beginning to feel a little worried."
        },
        {
          "text": "\"Just about as much right,\" said the Duchess, \"as pigs have to fly....\"",
          "translation": "「十分に正当ではあるわよ」、公爵夫人言った。「豚が空を飛ぶ位にはね」（ルイス・キャロル『不思議の国のアリス』第9章）"
        }
      ],
      "glosses": [
        "（「ありえないこと」を意味して）豚が空を飛んだら、空飛ぶ豚。"
      ]
    }
  ],
  "tags": [
    "idiomatic"
  ],
  "word": "when pigs fly"
}