"fuel economy" meaning in English

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      "tags": [
        "plural"
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      "expansion": "fuel economy (countable and uncountable, plural fuel economies)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "kind": "other",
          "name": "English entries with incorrect language header",
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          "orig": "en:Automotive",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Petroleum",
          "orig": "en:Petroleum",
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            "Liquids",
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            "Natural resources",
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            "Nature",
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          "parents": [
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        }
      ],
      "glosses": [
        "A measure of the amount of fuel consumed in a car or other vehicle based on the distance traveled."
      ],
      "id": "en-fuel_economy-en-noun-0-xIZFys",
      "links": [
        [
          "amount",
          "amount"
        ],
        [
          "fuel",
          "fuel"
        ],
        [
          "car",
          "car"
        ],
        [
          "vehicle",
          "vehicle"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "fuel economy"
      ]
    }
  ],
  "word": "fuel economy"
}

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      "form": "fuel economies",
      "tags": [
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      "expansion": "fuel economy (countable and uncountable, plural fuel economies)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Automotive",
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        "en:Transport"
      ],
      "glosses": [
        "A measure of the amount of fuel consumed in a car or other vehicle based on the distance traveled."
      ],
      "links": [
        [
          "amount",
          "amount"
        ],
        [
          "fuel",
          "fuel"
        ],
        [
          "car",
          "car"
        ],
        [
          "vehicle",
          "vehicle"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "fuel economy"
      ]
    }
  ],
  "word": "fuel economy"
}