"front crawl" meaning in English

{
  "forms": [
    {
      "form": "front crawls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "front crawl (plural front crawls)",
      "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": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Swimming",
          "orig": "en:Swimming",
          "parents": [
            "Water sports",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A style of swimming where the swimmer is face-down in the water and moves the arms in alternating overhead strokes."
      ],
      "id": "en-front_crawl-en-noun-pmprOLSC",
      "links": [
        [
          "swimming",
          "swimming"
        ]
      ],
      "synonyms": [
        {
          "word": "American crawl"
        },
        {
          "word": "Australian crawl"
        },
        {
          "word": "crawl"
        },
        {
          "word": "freestyle"
        }
      ],
      "wikipedia": [
        "front crawl"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌfɹʌntˈkɹɑːl/"
    }
  ],
  "word": "front crawl"
}

{
  "forms": [
    {
      "form": "front crawls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "front crawl (plural front crawls)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with IPA pronunciation",
        "English terms with non-redundant non-automated sortkeys",
        "en:Swimming"
      ],
      "glosses": [
        "A style of swimming where the swimmer is face-down in the water and moves the arms in alternating overhead strokes."
      ],
      "links": [
        [
          "swimming",
          "swimming"
        ]
      ],
      "wikipedia": [
        "front crawl"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌfɹʌntˈkɹɑːl/"
    }
  ],
  "synonyms": [
    {
      "word": "American crawl"
    },
    {
      "word": "Australian crawl"
    },
    {
      "word": "crawl"
    },
    {
      "word": "freestyle"
    }
  ],
  "word": "front crawl"
}