"letterfounder" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "letter",
        "3": "founder"
      },
      "expansion": "letter + founder",
      "name": "compound"
    }
  ],
  "etymology_text": "letter + founder",
  "forms": [
    {
      "form": "letterfounders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "letterfounder (plural letterfounders)",
      "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": "topical",
          "langcode": "en",
          "name": "Printing",
          "orig": "en:Printing",
          "parents": [
            "Industries",
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "One who founds or casts letters or types."
      ],
      "id": "en-letterfounder-en-noun-FM0mHPjn",
      "links": [
        [
          "printing",
          "printing#Noun"
        ],
        [
          "found",
          "found"
        ],
        [
          "cast",
          "cast"
        ],
        [
          "letter",
          "letter"
        ],
        [
          "type",
          "type"
        ]
      ],
      "raw_glosses": [
        "(printing, historical) One who founds or casts letters or types."
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "media",
        "printing",
        "publishing"
      ]
    }
  ],
  "word": "letterfounder"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "letter",
        "3": "founder"
      },
      "expansion": "letter + founder",
      "name": "compound"
    }
  ],
  "etymology_text": "letter + founder",
  "forms": [
    {
      "form": "letterfounders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "letterfounder (plural letterfounders)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with historical senses",
        "en:Printing"
      ],
      "glosses": [
        "One who founds or casts letters or types."
      ],
      "links": [
        [
          "printing",
          "printing#Noun"
        ],
        [
          "found",
          "found"
        ],
        [
          "cast",
          "cast"
        ],
        [
          "letter",
          "letter"
        ],
        [
          "type",
          "type"
        ]
      ],
      "raw_glosses": [
        "(printing, historical) One who founds or casts letters or types."
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "media",
        "printing",
        "publishing"
      ]
    }
  ],
  "word": "letterfounder"
}