"not be able to hit the broad side of a barn" meaning in English

{
  "forms": [
    {
      "form": "cannot hit the broad side of a barn",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "could not hit the broad side of a barn",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cannot hit the broad side of a barn",
        "2": "-",
        "3": "could not hit the broad side of a barn",
        "4": "-",
        "head": "not be able to hit the broad side of a barn"
      },
      "expansion": "not be able to hit the broad side of a barn (third-person singular simple present cannot hit the broad side of a barn, no present participle, simple past could not hit the broad side of a barn, no past participle)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "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 entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English negative polarity items",
          "parents": [
            "Negative polarity items",
            "Terms by semantic function"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Hebrew terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "No, I am really not good at batting in baseball. I cannot hit the broad side of a barn, really.",
          "type": "example"
        },
        {
          "text": "The new recruit is absolutely worthless with a rifle. Blimey, she wouldn't be able to hit the broad side of a barn if I asked her to.",
          "type": "example"
        }
      ],
      "glosses": [
        "have a very poor aim, such as while using firearms or in sports."
      ],
      "id": "en-not_be_able_to_hit_the_broad_side_of_a_barn-en-verb-QDca8N3h",
      "related": [
        {
          "word": "barn door"
        }
      ],
      "synonyms": [
        {
          "word": "not hit a cow's arse with a banjo"
        }
      ],
      "tags": [
        "no-past-participle",
        "no-present-participle"
      ],
      "translations": [
        {
          "code": "he",
          "lang": "Hebrew",
          "sense": "have very poor aim",
          "word": "לא להיות מסוגל לפגוע בקיר של אסם"
        },
        {
          "code": "he",
          "lang": "Hebrew",
          "sense": "have very poor aim",
          "word": "לא להצליח לקלוע אפילו לקיר של אסם"
        }
      ]
    }
  ],
  "word": "not be able to hit the broad side of a barn"
}

{
  "forms": [
    {
      "form": "cannot hit the broad side of a barn",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "could not hit the broad side of a barn",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cannot hit the broad side of a barn",
        "2": "-",
        "3": "could not hit the broad side of a barn",
        "4": "-",
        "head": "not be able to hit the broad side of a barn"
      },
      "expansion": "not be able to hit the broad side of a barn (third-person singular simple present cannot hit the broad side of a barn, no present participle, simple past could not hit the broad side of a barn, no past participle)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "barn door"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English negative polarity items",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with usage examples",
        "English verbs",
        "Hebrew terms with redundant script codes"
      ],
      "examples": [
        {
          "text": "No, I am really not good at batting in baseball. I cannot hit the broad side of a barn, really.",
          "type": "example"
        },
        {
          "text": "The new recruit is absolutely worthless with a rifle. Blimey, she wouldn't be able to hit the broad side of a barn if I asked her to.",
          "type": "example"
        }
      ],
      "glosses": [
        "have a very poor aim, such as while using firearms or in sports."
      ],
      "tags": [
        "no-past-participle",
        "no-present-participle"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "not hit a cow's arse with a banjo"
    }
  ],
  "translations": [
    {
      "code": "he",
      "lang": "Hebrew",
      "sense": "have very poor aim",
      "word": "לא להיות מסוגל לפגוע בקיר של אסם"
    },
    {
      "code": "he",
      "lang": "Hebrew",
      "sense": "have very poor aim",
      "word": "לא להצליח לקלוע אפילו לקיר של אסם"
    }
  ],
  "word": "not be able to hit the broad side of a barn"
}