"free running" meaning in English

{
  "etymology_text": "A term introduced by parkour practitioner Sebastien Foucan in a programme called Jump London as a synonym for parkour. The usage has since changed through the adverse reaction of parkour practitioners to somersaults and non-efficient movements being introduced to the discipline.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "free running (uncountable)",
      "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"
        }
      ],
      "glosses": [
        "The activity of combining parkour with gymnastics to pass obstacles and demonstrate athletic talent, most often in urban environments."
      ],
      "id": "en-free_running-en-noun-onDwOdWI",
      "links": [
        [
          "parkour",
          "parkour"
        ],
        [
          "gymnastics",
          "gymnastics"
        ],
        [
          "urban",
          "urban"
        ]
      ],
      "related": [
        {
          "word": "free runner"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "activity of combining parkour with gymnastics",
          "tags": [
            "masculine"
          ],
          "word": "parkour"
        }
      ],
      "wikipedia": [
        "en:free running"
      ]
    }
  ],
  "word": "free running"
}

{
  "etymology_text": "A term introduced by parkour practitioner Sebastien Foucan in a programme called Jump London as a synonym for parkour. The usage has since changed through the adverse reaction of parkour practitioners to somersaults and non-efficient movements being introduced to the discipline.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "free running (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "free runner"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns"
      ],
      "glosses": [
        "The activity of combining parkour with gymnastics to pass obstacles and demonstrate athletic talent, most often in urban environments."
      ],
      "links": [
        [
          "parkour",
          "parkour"
        ],
        [
          "gymnastics",
          "gymnastics"
        ],
        [
          "urban",
          "urban"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "en:free running"
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "activity of combining parkour with gymnastics",
      "tags": [
        "masculine"
      ],
      "word": "parkour"
    }
  ],
  "word": "free running"
}