"chartermaster" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "charter",
        "3": "master"
      },
      "expansion": "charter + master",
      "name": "compound"
    }
  ],
  "etymology_text": "From charter + master.",
  "forms": [
    {
      "form": "chartermasters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chartermaster (plural chartermasters)",
      "name": "en-noun"
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  "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"
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          "source": "w"
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          "source": "w"
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          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mining",
          "orig": "en:Mining",
          "parents": [
            "Industries",
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
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          "source": "w"
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          "kind": "topical",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A contractor for working a pit or part of a pit."
      ],
      "id": "en-chartermaster-en-noun-SS-M2n9A",
      "links": [
        [
          "mining",
          "mining#Noun"
        ],
        [
          "contractor",
          "contractor"
        ],
        [
          "work",
          "work"
        ],
        [
          "pit",
          "pit"
        ]
      ],
      "raw_glosses": [
        "(mining, historical) A contractor for working a pit or part of a pit."
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "business",
        "mining"
      ]
    }
  ],
  "word": "chartermaster"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "charter",
        "3": "master"
      },
      "expansion": "charter + master",
      "name": "compound"
    }
  ],
  "etymology_text": "From charter + master.",
  "forms": [
    {
      "form": "chartermasters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chartermaster (plural chartermasters)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "en:Mining",
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      "glosses": [
        "A contractor for working a pit or part of a pit."
      ],
      "links": [
        [
          "mining",
          "mining#Noun"
        ],
        [
          "contractor",
          "contractor"
        ],
        [
          "work",
          "work"
        ],
        [
          "pit",
          "pit"
        ]
      ],
      "raw_glosses": [
        "(mining, historical) A contractor for working a pit or part of a pit."
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "business",
        "mining"
      ]
    }
  ],
  "word": "chartermaster"
}