"125" meaning in English

{
  "etymology_text": "From their maximum speed of 125 mph.",
  "forms": [
    {
      "form": "125s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "125 (plural 125s)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "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": "Hindu-Arabic script",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "High-speed rail",
          "orig": "en:High-speed rail",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1999 June 16, Hoppy, “Re: HST from Paddington”, in uk.railway (Usenet)",
          "text": "How much rail horsepower does a 125 have? Well I don't have the actual TE curve on me here (it's at home) but I can approximate.",
          "type": "quotation"
        },
        {
          "ref": "2003 December 1, Sean Marshall, “Re: Voyager/Meridian differences”, in uk.railway (Usenet)",
          "text": "Most of the cheap tickets are valid on both 125s and Turbos - indeed some are ONLY available on 125s (eg First Plus London Day Out).",
          "type": "quotation"
        },
        {
          "ref": "2010 January 6, McKevvy, “Re: Could you safely lie between the rails of an HSL?”, in uk.railway (Usenet)",
          "text": "When I was an apprentice many years ago, the 125 used to come through Markinch station in Fife at 1.27pm every weekday.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A high-speed train (HST) powered by two British Rail Class 43s, one at each end."
      ],
      "id": "en-125-en-noun-gStYj~Vo",
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "HST",
          "HST"
        ]
      ],
      "raw_glosses": [
        "(UK, rail transport) A high-speed train (HST) powered by two British Rail Class 43s, one at each end."
      ],
      "tags": [
        "UK"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌwʌn.tuːˈfaɪv/"
    }
  ],
  "word": "125"
}

{
  "etymology_text": "From their maximum speed of 125 mph.",
  "forms": [
    {
      "form": "125s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "125 (plural 125s)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English 3-syllable words",
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English nouns",
        "English terms spelled with numbers",
        "English terms with IPA pronunciation",
        "English terms with quotations",
        "English words without vowels",
        "Hindu-Arabic script",
        "en:High-speed rail",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "1999 June 16, Hoppy, “Re: HST from Paddington”, in uk.railway (Usenet)",
          "text": "How much rail horsepower does a 125 have? Well I don't have the actual TE curve on me here (it's at home) but I can approximate.",
          "type": "quotation"
        },
        {
          "ref": "2003 December 1, Sean Marshall, “Re: Voyager/Meridian differences”, in uk.railway (Usenet)",
          "text": "Most of the cheap tickets are valid on both 125s and Turbos - indeed some are ONLY available on 125s (eg First Plus London Day Out).",
          "type": "quotation"
        },
        {
          "ref": "2010 January 6, McKevvy, “Re: Could you safely lie between the rails of an HSL?”, in uk.railway (Usenet)",
          "text": "When I was an apprentice many years ago, the 125 used to come through Markinch station in Fife at 1.27pm every weekday.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A high-speed train (HST) powered by two British Rail Class 43s, one at each end."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "HST",
          "HST"
        ]
      ],
      "raw_glosses": [
        "(UK, rail transport) A high-speed train (HST) powered by two British Rail Class 43s, one at each end."
      ],
      "tags": [
        "UK"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌwʌn.tuːˈfaɪv/"
    }
  ],
  "word": "125"
}