"trepanner" meaning in English

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      "expansion": "From trepan + -er.",
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  "etymology_text": "From trepan + -er.",
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      "form": "trepanners",
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  "lang_code": "en",
  "pos": "noun",
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          "text": "[I]n the year 1000 the trepanner had at his disposal the semi-mechanical bow drill that was used by carpenters and masons of the time.",
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      ],
      "glosses": [
        "A person who trepans."
      ],
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          "trepan",
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        "A trepanning tool."
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      "expansion": "From trepan + -er.",
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  "etymology_text": "From trepan + -er.",
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