"knucklehead" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "knuckle",
        "3": "head"
      },
      "expansion": "knuckle + head",
      "name": "com"
    }
  ],
  "etymology_text": "From knuckle + head.",
  "forms": [
    {
      "form": "knuckleheads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "knucklehead (plural knuckleheads)",
      "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"
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          "source": "w"
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          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
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          "name": "Pages with entries",
          "parents": [],
          "source": "w"
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "knuckleheadery"
        },
        {
          "word": "knuckleheadish"
        }
      ],
      "examples": [
        {
          "text": "Don't stick that screwdriver into the live electrical outlet, you knucklehead!",
          "type": "example"
        }
      ],
      "glosses": [
        "An idiot; a stupid or inept person."
      ],
      "id": "en-knucklehead-en-noun-P3AB3MBD",
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "idiot",
          "idiot"
        ],
        [
          "stupid",
          "stupid"
        ],
        [
          "inept",
          "inept"
        ]
      ],
      "raw_glosses": [
        "(slang, derogatory) An idiot; a stupid or inept person."
      ],
      "related": [
        {
          "word": "knuckle"
        }
      ],
      "tags": [
        "derogatory",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈnʌkl̩ˌhɛd/"
    },
    {
      "audio": "en-us-knucklehead.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/2d/En-us-knucklehead.ogg/En-us-knucklehead.ogg.mp3",
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    }
  ],
  "word": "knucklehead"
}

{
  "derived": [
    {
      "word": "knuckleheadery"
    },
    {
      "word": "knuckleheadish"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "knuckle",
        "3": "head"
      },
      "expansion": "knuckle + head",
      "name": "com"
    }
  ],
  "etymology_text": "From knuckle + head.",
  "forms": [
    {
      "form": "knuckleheads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "knucklehead (plural knuckleheads)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "knuckle"
    }
  ],
  "senses": [
    {
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        "English compound terms",
        "English countable nouns",
        "English derogatory terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English slang",
        "English terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries",
        "en:People"
      ],
      "examples": [
        {
          "text": "Don't stick that screwdriver into the live electrical outlet, you knucklehead!",
          "type": "example"
        }
      ],
      "glosses": [
        "An idiot; a stupid or inept person."
      ],
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "idiot",
          "idiot"
        ],
        [
          "stupid",
          "stupid"
        ],
        [
          "inept",
          "inept"
        ]
      ],
      "raw_glosses": [
        "(slang, derogatory) An idiot; a stupid or inept person."
      ],
      "tags": [
        "derogatory",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈnʌkl̩ˌhɛd/"
    },
    {
      "audio": "en-us-knucklehead.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/2d/En-us-knucklehead.ogg/En-us-knucklehead.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/2/2d/En-us-knucklehead.ogg"
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  "word": "knucklehead"
}