"ready, set, go" meaning in English

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      "expansion": "ready, set, go",
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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
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          "kind": "other",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sports",
          "orig": "en:Sports",
          "parents": [
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
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      ],
      "glosses": [
        "on your mark, get set, go"
      ],
      "id": "en-ready,_set,_go-en-phrase-LgX1ktn4",
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "on your mark, get set, go",
          "on your mark, get set, go"
        ]
      ],
      "raw_glosses": [
        "(sports) on your mark, get set, go"
      ],
      "related": [
        {
          "word": "lights, camera, action"
        },
        {
          "word": "ready, aim, fire"
        }
      ],
      "synonyms": [
        {
          "word": "on your mark, get set, go"
        },
        {
          "word": "ready, steady, go"
        }
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports"
      ],
      "translations": [
        {
          "code": "it",
          "lang": "Italian",
          "sense": "three-command start for any action or contest",
          "word": "pronti, partenza, via"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "sēno",
          "sense": "three-command start for any action or contest",
          "word": "せえの"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "raz, dva, tri",
          "sense": "three-command start for any action or contest",
          "word": "раз, два, три"
        },
        {
          "code": "uk",
          "english": "official",
          "lang": "Ukrainian",
          "roman": "na start, uvaha, ruš!",
          "sense": "three-command start for any action or contest",
          "tags": [
            "formal"
          ],
          "word": "на старт, увага, руш!"
        },
        {
          "code": "uk",
          "lang": "Ukrainian",
          "roman": "raz, dva, try, počaly",
          "sense": "three-command start for any action or contest",
          "word": "раз, два, три, почали"
        }
      ]
    }
  ],
  "word": "ready, set, go"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "related": [
    {
      "word": "lights, camera, action"
    },
    {
      "word": "ready, aim, fire"
    }
  ],
  "senses": [
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        "en:Sports"
      ],
      "glosses": [
        "on your mark, get set, go"
      ],
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "on your mark, get set, go",
          "on your mark, get set, go"
        ]
      ],
      "raw_glosses": [
        "(sports) on your mark, get set, go"
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports"
      ]
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  ],
  "synonyms": [
    {
      "word": "on your mark, get set, go"
    },
    {
      "word": "ready, steady, go"
    }
  ],
  "translations": [
    {
      "code": "it",
      "lang": "Italian",
      "sense": "three-command start for any action or contest",
      "word": "pronti, partenza, via"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "sēno",
      "sense": "three-command start for any action or contest",
      "word": "せえの"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "raz, dva, tri",
      "sense": "three-command start for any action or contest",
      "word": "раз, два, три"
    },
    {
      "code": "uk",
      "english": "official",
      "lang": "Ukrainian",
      "roman": "na start, uvaha, ruš!",
      "sense": "three-command start for any action or contest",
      "tags": [
        "formal"
      ],
      "word": "на старт, увага, руш!"
    },
    {
      "code": "uk",
      "lang": "Ukrainian",
      "roman": "raz, dva, try, počaly",
      "sense": "three-command start for any action or contest",
      "word": "раз, два, три, почали"
    }
  ],
  "word": "ready, set, go"
}