"bright spark" meaning in English

{
  "forms": [
    {
      "form": "bright sparks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bright spark (plural bright sparks)",
      "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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "John's youngest is doing well at school. He's a bright spark, isn't he?"
        },
        {
          "ref": "2004, David Robinson, An Expat's Life, Luxembourg & the White Rose, page 193",
          "text": "At some point the subject got onto sex and some bright spark decided it would be a good idea if I lost my virginity that night. I was not too keen on the idea as I was knackered and exceedingly pissed.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A person who is intelligent, clever or quick-witted."
      ],
      "id": "en-bright_spark-en-noun-BSjq0VBU",
      "links": [
        [
          "ironic",
          "irony"
        ],
        [
          "intelligent",
          "intelligent"
        ],
        [
          "clever",
          "clever"
        ],
        [
          "quick-witted",
          "quick-witted"
        ]
      ],
      "raw_glosses": [
        "(colloquial, often ironic) A person who is intelligent, clever or quick-witted."
      ],
      "related": [
        {
          "word": "clever clogs"
        },
        {
          "word": "smart cookie"
        }
      ],
      "tags": [
        "colloquial",
        "ironic",
        "often"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "a clever person",
          "tags": [
            "feminine"
          ],
          "word": "tête"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "a clever person",
          "tags": [
            "feminine"
          ],
          "word": "flèche"
        },
        {
          "code": "mi",
          "lang": "Maori",
          "sense": "a clever person",
          "word": "pūrātoke"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "a clever person",
          "tags": [
            "neuter"
          ],
          "word": "ljushuvud"
        }
      ]
    }
  ],
  "word": "bright spark"
}

{
  "forms": [
    {
      "form": "bright sparks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bright spark (plural bright sparks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "clever clogs"
    },
    {
      "word": "smart cookie"
    }
  ],
  "senses": [
    {
      "categories": [
        "English colloquialisms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "Quotation templates to be cleaned",
        "en:People"
      ],
      "examples": [
        {
          "text": "John's youngest is doing well at school. He's a bright spark, isn't he?"
        },
        {
          "ref": "2004, David Robinson, An Expat's Life, Luxembourg & the White Rose, page 193",
          "text": "At some point the subject got onto sex and some bright spark decided it would be a good idea if I lost my virginity that night. I was not too keen on the idea as I was knackered and exceedingly pissed.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A person who is intelligent, clever or quick-witted."
      ],
      "links": [
        [
          "ironic",
          "irony"
        ],
        [
          "intelligent",
          "intelligent"
        ],
        [
          "clever",
          "clever"
        ],
        [
          "quick-witted",
          "quick-witted"
        ]
      ],
      "raw_glosses": [
        "(colloquial, often ironic) A person who is intelligent, clever or quick-witted."
      ],
      "tags": [
        "colloquial",
        "ironic",
        "often"
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "a clever person",
      "tags": [
        "feminine"
      ],
      "word": "tête"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "a clever person",
      "tags": [
        "feminine"
      ],
      "word": "flèche"
    },
    {
      "code": "mi",
      "lang": "Maori",
      "sense": "a clever person",
      "word": "pūrātoke"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "a clever person",
      "tags": [
        "neuter"
      ],
      "word": "ljushuvud"
    }
  ],
  "word": "bright spark"
}