"untrowable" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "untrowable"
      },
      "expansion": "Middle English untrowable",
      "name": "inh"
    },
    {
      "args": {
        "1": "enm",
        "2": "untrowabyll"
      },
      "expansion": "untrowabyll",
      "name": "m"
    },
    {
      "args": {
        "1": "en",
        "2": "un-",
        "3": "trowable"
      },
      "expansion": "un- + trowable",
      "name": "pre"
    }
  ],
  "etymology_text": "From Middle English untrowable, untrowabyll, equivalent to un- + trowable.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "untrowable",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "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 prefixed with un-",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "incredible"
      ],
      "id": "en-untrowable-en-adj-a~ZyAMKJ",
      "links": [
        [
          "incredible",
          "incredible"
        ]
      ],
      "raw_glosses": [
        "(obsolete) incredible"
      ],
      "tags": [
        "obsolete"
      ]
    }
  ],
  "word": "untrowable"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "untrowable"
      },
      "expansion": "Middle English untrowable",
      "name": "inh"
    },
    {
      "args": {
        "1": "enm",
        "2": "untrowabyll"
      },
      "expansion": "untrowabyll",
      "name": "m"
    },
    {
      "args": {
        "1": "en",
        "2": "un-",
        "3": "trowable"
      },
      "expansion": "un- + trowable",
      "name": "pre"
    }
  ],
  "etymology_text": "From Middle English untrowable, untrowabyll, equivalent to un- + trowable.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "untrowable",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms derived from Middle English",
        "English terms inherited from Middle English",
        "English terms prefixed with un-",
        "English terms with obsolete senses"
      ],
      "glosses": [
        "incredible"
      ],
      "links": [
        [
          "incredible",
          "incredible"
        ]
      ],
      "raw_glosses": [
        "(obsolete) incredible"
      ],
      "tags": [
        "obsolete"
      ]
    }
  ],
  "word": "untrowable"
}