"keelman" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "keel",
        "3": "man"
      },
      "expansion": "keel + -man",
      "name": "suffix"
    }
  ],
  "etymology_text": "keel + -man",
  "forms": [
    {
      "form": "keelmen",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "keelmen"
      },
      "expansion": "keelman (plural keelmen)",
      "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 terms suffixed with -man",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A keeler; one who manages or works on a coal boat."
      ],
      "id": "en-keelman-en-noun-skRrOATS",
      "links": [
        [
          "keeler",
          "keeler"
        ],
        [
          "coal",
          "coal"
        ],
        [
          "boat",
          "boat"
        ]
      ],
      "raw_glosses": [
        "(historical) A keeler; one who manages or works on a coal boat."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "keelman"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "keel",
        "3": "man"
      },
      "expansion": "keel + -man",
      "name": "suffix"
    }
  ],
  "etymology_text": "keel + -man",
  "forms": [
    {
      "form": "keelmen",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "keelmen"
      },
      "expansion": "keelman (plural keelmen)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English nouns with irregular plurals",
        "English terms suffixed with -man",
        "English terms with historical senses"
      ],
      "glosses": [
        "A keeler; one who manages or works on a coal boat."
      ],
      "links": [
        [
          "keeler",
          "keeler"
        ],
        [
          "coal",
          "coal"
        ],
        [
          "boat",
          "boat"
        ]
      ],
      "raw_glosses": [
        "(historical) A keeler; one who manages or works on a coal boat."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "keelman"
}