"purchase system" meaning in English

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      "expansion": "purchase system",
      "name": "en-proper noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
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          "kind": "other",
          "name": "British English",
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      ],
      "glosses": [
        "The practice, abolished in 1871, of paying money to be made an officer in the cavalry and infantry regiments of the English and later British Army, without having to wait for promotion."
      ],
      "id": "en-purchase_system-en-name-1Zbyv9DC",
      "links": [
        [
          "officer",
          "officer"
        ],
        [
          "cavalry",
          "cavalry"
        ],
        [
          "infantry",
          "infantry"
        ],
        [
          "regiment",
          "regiment"
        ],
        [
          "promotion",
          "promotion"
        ]
      ],
      "raw_glosses": [
        "(UK, historical) The practice, abolished in 1871, of paying money to be made an officer in the cavalry and infantry regiments of the English and later British Army, without having to wait for promotion."
      ],
      "tags": [
        "UK",
        "historical"
      ],
      "wikipedia": [
        "Purchase of commissions in the British Army"
      ]
    }
  ],
  "word": "purchase system"
}

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      "expansion": "purchase system",
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "British English",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms with historical senses",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "The practice, abolished in 1871, of paying money to be made an officer in the cavalry and infantry regiments of the English and later British Army, without having to wait for promotion."
      ],
      "links": [
        [
          "officer",
          "officer"
        ],
        [
          "cavalry",
          "cavalry"
        ],
        [
          "infantry",
          "infantry"
        ],
        [
          "regiment",
          "regiment"
        ],
        [
          "promotion",
          "promotion"
        ]
      ],
      "raw_glosses": [
        "(UK, historical) The practice, abolished in 1871, of paying money to be made an officer in the cavalry and infantry regiments of the English and later British Army, without having to wait for promotion."
      ],
      "tags": [
        "UK",
        "historical"
      ],
      "wikipedia": [
        "Purchase of commissions in the British Army"
      ]
    }
  ],
  "word": "purchase system"
}