"planespotting" meaning in English

{
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        "1": "en",
        "2": "plane",
        "3": "spotting"
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      "expansion": "plane + spotting",
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  ],
  "etymology_text": "From plane + spotting.",
  "head_templates": [
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      "expansion": "planespotting (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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      ],
      "glosses": [
        "The observation and logging of the registration numbers (tailnumbers) of aircraft as a hobby."
      ],
      "id": "en-planespotting-en-noun-ey8xv2Rk",
      "links": [
        [
          "observation",
          "observation"
        ],
        [
          "log",
          "log"
        ],
        [
          "registration",
          "registration"
        ],
        [
          "number",
          "number"
        ],
        [
          "tailnumber",
          "tailnumber"
        ],
        [
          "aircraft",
          "aircraft"
        ],
        [
          "hobby",
          "hobby"
        ]
      ],
      "related": [
        {
          "word": "planespot"
        },
        {
          "word": "planespotter"
        },
        {
          "word": "trainspotting"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "planespotting"
      ]
    }
  ],
  "word": "planespotting"
}

{
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    {
      "args": {
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        "2": "plane",
        "3": "spotting"
      },
      "expansion": "plane + spotting",
      "name": "compound"
    }
  ],
  "etymology_text": "From plane + spotting.",
  "head_templates": [
    {
      "args": {
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      "expansion": "planespotting (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "planespot"
    },
    {
      "word": "planespotter"
    },
    {
      "word": "trainspotting"
    }
  ],
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      "glosses": [
        "The observation and logging of the registration numbers (tailnumbers) of aircraft as a hobby."
      ],
      "links": [
        [
          "observation",
          "observation"
        ],
        [
          "log",
          "log"
        ],
        [
          "registration",
          "registration"
        ],
        [
          "number",
          "number"
        ],
        [
          "tailnumber",
          "tailnumber"
        ],
        [
          "aircraft",
          "aircraft"
        ],
        [
          "hobby",
          "hobby"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "planespotting"
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  ],
  "word": "planespotting"
}