"fastwalker" meaning in English

{
  "etymology_templates": [
    {
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        "1": "en",
        "2": "fast",
        "3": "walker"
      },
      "expansion": "fast + walker",
      "name": "compound"
    }
  ],
  "etymology_text": "From fast + walker, from the notion that UFOs travel fast. Originally a code word created by NORAD.",
  "forms": [
    {
      "form": "fastwalkers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "fastwalker (plural fastwalkers)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Ufology",
          "orig": "en:Ufology",
          "parents": [
            "Anti-gravity",
            "Celestial inhabitants",
            "Forteana",
            "Fictional abilities",
            "Gravity",
            "Science fiction",
            "Space access",
            "Demonyms",
            "Fictional characters",
            "Pseudoscience",
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            "Entertainment",
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            "Nouns",
            "Culture",
            "Lemmas",
            "Society"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of UFO."
      ],
      "id": "en-fastwalker-en-noun-NX0ywQJK",
      "links": [
        [
          "ufology",
          "ufology"
        ],
        [
          "UFO",
          "UFO#English"
        ]
      ],
      "raw_glosses": [
        "(ufology) Synonym of UFO."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "UFO"
        }
      ],
      "topics": [
        "human-sciences",
        "mysticism",
        "mythology",
        "philosophy",
        "sciences",
        "ufology"
      ]
    }
  ],
  "word": "fastwalker"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "fast",
        "3": "walker"
      },
      "expansion": "fast + walker",
      "name": "compound"
    }
  ],
  "etymology_text": "From fast + walker, from the notion that UFOs travel fast. Originally a code word created by NORAD.",
  "forms": [
    {
      "form": "fastwalkers",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "fastwalker (plural fastwalkers)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Ufology"
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      "glosses": [
        "Synonym of UFO."
      ],
      "links": [
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          "ufology",
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        ],
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          "UFO#English"
        ]
      ],
      "raw_glosses": [
        "(ufology) Synonym of UFO."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "UFO"
        }
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  "word": "fastwalker"
}