"house master" meaning in English

{
  "forms": [
    {
      "form": "house masters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "house master (plural house masters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "64 36",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
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        {
          "_dis": "89 11",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
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          "_dis": "90 10",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
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      ],
      "glosses": [
        "A teacher in charge of a boarding house at a boarding school."
      ],
      "id": "en-house_master-en-noun-2f4NYYkD",
      "links": [
        [
          "teacher",
          "teacher"
        ],
        [
          "boarding house",
          "boarding house"
        ],
        [
          "boarding school",
          "boarding school"
        ]
      ]
    },
    {
      "glosses": [
        "A teacher in charge of a sports house at a school."
      ],
      "id": "en-house_master-en-noun-tPoUxKyf"
    }
  ],
  "word": "house master"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "house masters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "house master (plural house masters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A teacher in charge of a boarding house at a boarding school."
      ],
      "links": [
        [
          "teacher",
          "teacher"
        ],
        [
          "boarding house",
          "boarding house"
        ],
        [
          "boarding school",
          "boarding school"
        ]
      ]
    },
    {
      "glosses": [
        "A teacher in charge of a sports house at a school."
      ]
    }
  ],
  "word": "house master"
}