Etymology of knuck

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

{
  "templates": [
    {
      "name": "clipping",
      "args": {
        "1": "en",
        "2": "knuckle"
      },
      "expansion": "Clipping of knuckle"
    }
  ],
  "links": [
    [
      "knuckle",
      "knuckle#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "A thief or pickpocket.",
        "A knuckle duster."
      ],
      "tags": [
        "archaic",
        "slang",
        "in-plural",
        "often"
      ],
      "recordId": "8a09d15a4909ec52945e229388134c2fc59bfb3f0e19c674009d82bf6c44e916",
      "rawRecordSha256": "dd2053092896744321dd392614dda2695da2f14b15deb5ce182c799e8d7f4a0d",
      "sourceRecordOrdinal": 8971009
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "glosses": 0
  }
}