"dog's bollocks" meaning in English

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "nocap": "1"
      },
      "expansion": "uncertain",
      "name": "unc"
    }
  ],
  "etymology_text": "Origin uncertain.",
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "dog's bollocks pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Australian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Irish English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "New Zealand English",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "That new flat screen TV you bought is the dog's bollocks.",
          "type": "example"
        }
      ],
      "glosses": [
        "Something that is outstandingly good."
      ],
      "id": "en-dog's_bollocks-en-noun-eISo5ZAT",
      "raw_glosses": [
        "(British, Ireland, Australia, New Zealand, vulgar slang) Something that is outstandingly good."
      ],
      "related": [
        {
          "word": "bee's knees"
        },
        {
          "word": "cat's pyjamas"
        },
        {
          "word": "cat's whiskers"
        },
        {
          "word": "duck's guts"
        },
        {
          "word": "mutt's nuts"
        }
      ],
      "synonyms": [
        {
          "word": "best"
        },
        {
          "tags": [
            "euphemistic"
          ],
          "word": "dog's dangly bits"
        },
        {
          "word": "dog's ballocks"
        }
      ],
      "tags": [
        "Australia",
        "British",
        "Ireland",
        "New-Zealand",
        "plural",
        "plural-only",
        "slang",
        "vulgar"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-dog's bollocks.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/6f/En-au-dog%27s_bollocks.ogg/En-au-dog%27s_bollocks.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/6f/En-au-dog%27s_bollocks.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "dog's bollocks"
}

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "nocap": "1"
      },
      "expansion": "uncertain",
      "name": "unc"
    }
  ],
  "etymology_text": "Origin uncertain.",
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "dog's bollocks pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "bee's knees"
    },
    {
      "word": "cat's pyjamas"
    },
    {
      "word": "cat's whiskers"
    },
    {
      "word": "duck's guts"
    },
    {
      "word": "mutt's nuts"
    }
  ],
  "senses": [
    {
      "categories": [
        "Australian English",
        "British English",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English pluralia tantum",
        "English slang",
        "English terms with audio links",
        "English terms with unknown etymologies",
        "English terms with usage examples",
        "English vulgarities",
        "Irish English",
        "New Zealand English"
      ],
      "examples": [
        {
          "text": "That new flat screen TV you bought is the dog's bollocks.",
          "type": "example"
        }
      ],
      "glosses": [
        "Something that is outstandingly good."
      ],
      "raw_glosses": [
        "(British, Ireland, Australia, New Zealand, vulgar slang) Something that is outstandingly good."
      ],
      "synonyms": [
        {
          "word": "best"
        },
        {
          "tags": [
            "euphemistic"
          ],
          "word": "dog's dangly bits"
        }
      ],
      "tags": [
        "Australia",
        "British",
        "Ireland",
        "New-Zealand",
        "plural",
        "plural-only",
        "slang",
        "vulgar"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-dog's bollocks.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/6f/En-au-dog%27s_bollocks.ogg/En-au-dog%27s_bollocks.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/6f/En-au-dog%27s_bollocks.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "synonyms": [
    {
      "word": "dog's ballocks"
    }
  ],
  "word": "dog's bollocks"
}