"fuck knuckle" meaning in English

{
  "forms": [
    {
      "form": "fuck knuckles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "fuck knuckle (plural fuck knuckles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "fuck-knuckle"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1998 September 2, Randy Beaudreau, “This board is Beaudreau's House now”, in alt.tv.comedy-central (Usenet)",
          "text": "You fuck knuckles showed that you couldn't play fair, and because you couldn't play fair, now you've got to play by Beaudreau's Rules.",
          "type": "quotation"
        },
        {
          "text": "2004 December 3, William J. Wolfe, “Re: PETA Campaign Pitches Fish As Smart”, aus.politics, alt.politics.british, alt.politics.communism, alt.politics.democrats, and alt.politics.economics, Usenet\nThat's right, fuck knuckle, you can't prove that fish feel pain, neither can anybody else."
        },
        {
          "text": "2006 May 25, Colin Kynoch, “aus.sport.aussie-rules”, Re: Bumblers Fined for cheating and runner booted for 2 weeks, Usenet\nAnd can you point to any Essendon supporter who has defended Dimma?\nDidn't think so you deluded fuck knuckle."
        },
        {
          "ref": "2006 June 30, Kerry Plowright, Vostock Station - Point of Impact, Trafford Publishing",
          "text": "He still wondered who the fuck knuckle was who made them do that and who purchased the stupid fucking things.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative spelling of fuck-knuckle"
      ],
      "id": "en-fuck_knuckle-en-noun-O8mpXrlV",
      "links": [
        [
          "fuck-knuckle",
          "fuck-knuckle#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "fuck knuckle"
}

{
  "forms": [
    {
      "form": "fuck knuckles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "fuck knuckle (plural fuck knuckles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "fuck-knuckle"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1998 September 2, Randy Beaudreau, “This board is Beaudreau's House now”, in alt.tv.comedy-central (Usenet)",
          "text": "You fuck knuckles showed that you couldn't play fair, and because you couldn't play fair, now you've got to play by Beaudreau's Rules.",
          "type": "quotation"
        },
        {
          "text": "2004 December 3, William J. Wolfe, “Re: PETA Campaign Pitches Fish As Smart”, aus.politics, alt.politics.british, alt.politics.communism, alt.politics.democrats, and alt.politics.economics, Usenet\nThat's right, fuck knuckle, you can't prove that fish feel pain, neither can anybody else."
        },
        {
          "text": "2006 May 25, Colin Kynoch, “aus.sport.aussie-rules”, Re: Bumblers Fined for cheating and runner booted for 2 weeks, Usenet\nAnd can you point to any Essendon supporter who has defended Dimma?\nDidn't think so you deluded fuck knuckle."
        },
        {
          "ref": "2006 June 30, Kerry Plowright, Vostock Station - Point of Impact, Trafford Publishing",
          "text": "He still wondered who the fuck knuckle was who made them do that and who purchased the stupid fucking things.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative spelling of fuck-knuckle"
      ],
      "links": [
        [
          "fuck-knuckle",
          "fuck-knuckle#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "fuck knuckle"
}