"jock off" meaning in English

{
  "forms": [
    {
      "form": "jocks off",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "jocking off",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "jocked off",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "jocked off",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "jock off (third-person singular simple present jocks off, present participle jocking off, simple past and past participle jocked off)",
      "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 phrasal verbs with particle (off)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Horse racing",
          "orig": "en:Horse racing",
          "parents": [
            "Equestrianism",
            "Horses",
            "Sports",
            "Equids",
            "Livestock",
            "Human activity",
            "Odd-toed ungulates",
            "Agriculture",
            "Animals",
            "Human behaviour",
            "Mammals",
            "Applied sciences",
            "Lifeforms",
            "Human",
            "Vertebrates",
            "Sciences",
            "All topics",
            "Life",
            "Chordates",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2012, Robin Oakley, Britain and Ireland's Top 100 Racehorses of All Time",
          "text": "Dawn Run's owner, Charmian Hill, who had insisted on trainer Paddy Mullins 'jocking off' his son Tony and putting up Jonjo O'Neill to ride her in the Gold Cup, was an awkward cuss too.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To replace (a jockey) with another."
      ],
      "id": "en-jock_off-en-verb-8baJQs6d",
      "links": [
        [
          "horse racing",
          "horse racing"
        ],
        [
          "replace",
          "replace"
        ],
        [
          "jockey",
          "jockey"
        ]
      ],
      "raw_glosses": [
        "(transitive, informal, horse racing) To replace (a jockey) with another."
      ],
      "tags": [
        "informal",
        "transitive"
      ],
      "topics": [
        "hobbies",
        "horse-racing",
        "horseracing",
        "horses",
        "lifestyle",
        "pets",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "jock off"
}

{
  "forms": [
    {
      "form": "jocks off",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "jocking off",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "jocked off",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "jocked off",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "jock off (third-person singular simple present jocks off, present participle jocking off, simple past and past participle jocked off)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs with particle (off)",
        "English terms with quotations",
        "English transitive verbs",
        "English verbs",
        "Quotation templates to be cleaned",
        "en:Horse racing"
      ],
      "examples": [
        {
          "ref": "2012, Robin Oakley, Britain and Ireland's Top 100 Racehorses of All Time",
          "text": "Dawn Run's owner, Charmian Hill, who had insisted on trainer Paddy Mullins 'jocking off' his son Tony and putting up Jonjo O'Neill to ride her in the Gold Cup, was an awkward cuss too.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To replace (a jockey) with another."
      ],
      "links": [
        [
          "horse racing",
          "horse racing"
        ],
        [
          "replace",
          "replace"
        ],
        [
          "jockey",
          "jockey"
        ]
      ],
      "raw_glosses": [
        "(transitive, informal, horse racing) To replace (a jockey) with another."
      ],
      "tags": [
        "informal",
        "transitive"
      ],
      "topics": [
        "hobbies",
        "horse-racing",
        "horseracing",
        "horses",
        "lifestyle",
        "pets",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "jock off"
}