"sag wagon" meaning in English

{
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      "args": {
        "1": "en",
        "2": "sag",
        "3": "wagon"
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      "expansion": "sag + wagon",
      "name": "compound"
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  ],
  "etymology_text": "Probably sag + wagon; sometimes also said to stand for \"support and gear\" or \"support and grub\" (i.e. food).",
  "forms": [
    {
      "form": "sag wagons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sag wagon (plural sag wagons)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Cycling",
          "orig": "en:Cycling",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "A truck, van or other support vehicle used during cycling events, designed to hold food and other equipment for participants, and to pick up and carry any cyclists (and their bicycles) who can no longer ride."
      ],
      "id": "en-sag_wagon-en-noun-aY82uukP",
      "related": [
        {
          "word": "broom wagon"
        }
      ]
    }
  ],
  "word": "sag wagon"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "sag",
        "3": "wagon"
      },
      "expansion": "sag + wagon",
      "name": "compound"
    }
  ],
  "etymology_text": "Probably sag + wagon; sometimes also said to stand for \"support and gear\" or \"support and grub\" (i.e. food).",
  "forms": [
    {
      "form": "sag wagons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sag wagon (plural sag wagons)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "broom wagon"
    }
  ],
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        "en:Cycling"
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      "glosses": [
        "A truck, van or other support vehicle used during cycling events, designed to hold food and other equipment for participants, and to pick up and carry any cyclists (and their bicycles) who can no longer ride."
      ]
    }
  ],
  "word": "sag wagon"
}