"Informator Choristarum" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "!"
      },
      "expansion": "Informator Choristarum (plural not attested)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English nouns with unattested plurals",
          "parents": [
            "Nouns with unattested plurals",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Oxford University English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Occupations",
          "orig": "en:Occupations",
          "parents": [
            "People",
            "Work",
            "Human",
            "Human activity",
            "All topics",
            "Human behaviour",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The director of music at Magdalen College, Oxford."
      ],
      "id": "en-Informator_Choristarum-en-noun-VWSnBaW0",
      "links": [
        [
          "director of music",
          "director of music"
        ]
      ],
      "qualifier": "Oxford University",
      "raw_glosses": [
        "(Oxford University) The director of music at Magdalen College, Oxford."
      ],
      "tags": [
        "no-plural"
      ]
    }
  ],
  "word": "Informator Choristarum"
}

{
  "head_templates": [
    {
      "args": {
        "1": "!"
      },
      "expansion": "Informator Choristarum (plural not attested)",
      "name": "en-noun"
    }
  ],
  "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",
        "English nouns with unattested plurals",
        "Oxford University English",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Occupations"
      ],
      "glosses": [
        "The director of music at Magdalen College, Oxford."
      ],
      "links": [
        [
          "director of music",
          "director of music"
        ]
      ],
      "qualifier": "Oxford University",
      "raw_glosses": [
        "(Oxford University) The director of music at Magdalen College, Oxford."
      ],
      "tags": [
        "no-plural"
      ]
    }
  ],
  "word": "Informator Choristarum"
}