"airline mile" meaning in English

{
  "forms": [
    {
      "form": "airline miles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "airline mile (plural airline miles)",
      "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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A unit in the point system created by many airlines as part of their frequent flyer programs, which can be redeemed for free flights and other rewards. Traditionally airlines have awarded one airline mile per mile flown, but increasingly airline miles have been awarded based on other factors such as ticket price."
      ],
      "id": "en-airline_mile-en-noun-fSbZUGaa",
      "links": [
        [
          "unit",
          "unit"
        ],
        [
          "point",
          "point"
        ],
        [
          "airline",
          "airline"
        ],
        [
          "frequent flyer",
          "frequent flyer"
        ],
        [
          "mile",
          "mile"
        ]
      ],
      "related": [
        {
          "word": "air mile"
        }
      ],
      "wikipedia": [
        "Frequent-flyer program"
      ]
    }
  ],
  "word": "airline mile"
}

{
  "forms": [
    {
      "form": "airline miles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "airline mile (plural airline miles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "air mile"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A unit in the point system created by many airlines as part of their frequent flyer programs, which can be redeemed for free flights and other rewards. Traditionally airlines have awarded one airline mile per mile flown, but increasingly airline miles have been awarded based on other factors such as ticket price."
      ],
      "links": [
        [
          "unit",
          "unit"
        ],
        [
          "point",
          "point"
        ],
        [
          "airline",
          "airline"
        ],
        [
          "frequent flyer",
          "frequent flyer"
        ],
        [
          "mile",
          "mile"
        ]
      ],
      "wikipedia": [
        "Frequent-flyer program"
      ]
    }
  ],
  "word": "airline mile"
}