"grid girl" meaning in English

{
  "etymology_text": "From the fact that the hostesses appear on the grid at the start of motor races.",
  "forms": [
    {
      "form": "grid girls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grid girl (plural grid girls)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Female people",
          "orig": "en:Female people",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Motor racing",
          "orig": "en:Motor racing",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Occupations",
          "orig": "en:Occupations",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "video vixen"
        },
        {
          "word": "spokesmodel"
        },
        {
          "word": "pageant queen"
        },
        {
          "topics": [
            "darts",
            "games"
          ],
          "word": "walk-on girl"
        }
      ],
      "glosses": [
        "A hostess at a motor racing event."
      ],
      "hyponyms": [
        {
          "tags": [
            "British"
          ],
          "topics": [
            "motor-racing",
            "racing",
            "sports",
            "hobbies",
            "lifestyle"
          ],
          "word": "brolly dolly"
        },
        {
          "tags": [
            "Japanese"
          ],
          "topics": [
            "motor-racing",
            "racing",
            "sports",
            "hobbies",
            "lifestyle"
          ],
          "word": "race queen"
        }
      ],
      "id": "en-grid_girl-en-noun-H6eGnXA6",
      "links": [
        [
          "motor racing",
          "motor racing"
        ],
        [
          "hostess",
          "hostess"
        ],
        [
          "motor racing",
          "motor racing"
        ],
        [
          "event",
          "event"
        ]
      ],
      "raw_glosses": [
        "(motor racing) A hostess at a motor racing event."
      ],
      "synonyms": [
        {
          "word": "paddock girl"
        },
        {
          "word": "pit babe"
        },
        {
          "word": "pit girl"
        },
        {
          "word": "umbrella girl"
        }
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "motor-racing",
        "racing",
        "sports"
      ],
      "translations": [
        {
          "code": "pl",
          "lang": "Polish",
          "lang_code": "pl",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "hostessa"
        }
      ]
    }
  ],
  "word": "grid girl"
}

{
  "coordinate_terms": [
    {
      "word": "video vixen"
    },
    {
      "word": "spokesmodel"
    },
    {
      "word": "pageant queen"
    },
    {
      "topics": [
        "darts",
        "games"
      ],
      "word": "walk-on girl"
    }
  ],
  "etymology_text": "From the fact that the hostesses appear on the grid at the start of motor races.",
  "forms": [
    {
      "form": "grid girls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grid girl (plural grid girls)",
      "name": "en-noun"
    }
  ],
  "hyponyms": [
    {
      "tags": [
        "British"
      ],
      "topics": [
        "motor-racing",
        "racing",
        "sports",
        "hobbies",
        "lifestyle"
      ],
      "word": "brolly dolly"
    },
    {
      "tags": [
        "Japanese"
      ],
      "topics": [
        "motor-racing",
        "racing",
        "sports",
        "hobbies",
        "lifestyle"
      ],
      "word": "race queen"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Polish translations",
        "Translation table header lacks gloss",
        "en:Female people",
        "en:Motor racing",
        "en:Occupations"
      ],
      "glosses": [
        "A hostess at a motor racing event."
      ],
      "links": [
        [
          "motor racing",
          "motor racing"
        ],
        [
          "hostess",
          "hostess"
        ],
        [
          "motor racing",
          "motor racing"
        ],
        [
          "event",
          "event"
        ]
      ],
      "raw_glosses": [
        "(motor racing) A hostess at a motor racing event."
      ],
      "synonyms": [
        {
          "word": "paddock girl"
        },
        {
          "word": "pit babe"
        },
        {
          "word": "pit girl"
        },
        {
          "word": "umbrella girl"
        }
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "motor-racing",
        "racing",
        "sports"
      ]
    }
  ],
  "translations": [
    {
      "code": "pl",
      "lang": "Polish",
      "lang_code": "pl",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "hostessa"
    }
  ],
  "word": "grid girl"
}