"dab hand" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dab#Etymology_2<t: an expert; an adept>",
        "3": "hand"
      },
      "expansion": "dab (“ an expert; an adept”) + hand",
      "name": "compound"
    }
  ],
  "etymology_text": "From dab (“ an expert; an adept”) + hand.",
  "forms": [
    {
      "form": "dab hands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dab hand (plural dab hands)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
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          "parents": [],
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        {
          "kind": "other",
          "name": "Terms with Russian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "dab-handed"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              8,
              16
            ]
          ],
          "text": "She's a dab hand in the kitchen.",
          "type": "example"
        }
      ],
      "glosses": [
        "An expert; a very skilled person."
      ],
      "id": "en-dab_hand-en-noun-x4xBgv7E",
      "links": [
        [
          "expert",
          "expert"
        ]
      ],
      "raw_glosses": [
        "(British) An expert; a very skilled person."
      ],
      "tags": [
        "British"
      ],
      "translations": [
        {
          "code": "mi",
          "lang": "Maori",
          "lang_code": "mi",
          "sense": "an expert",
          "word": "ringarehe"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "lang_code": "ru",
          "roman": "spéc",
          "sense": "an expert",
          "tags": [
            "masculine"
          ],
          "word": "спе́ц"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "lang_code": "ru",
          "roman": "dóka",
          "sense": "an expert",
          "tags": [
            "masculine"
          ],
          "word": "до́ка"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "lang_code": "ru",
          "roman": "masták",
          "sense": "an expert",
          "tags": [
            "masculine"
          ],
          "word": "маста́к"
        }
      ]
    }
  ],
  "word": "dab hand"
}

{
  "derived": [
    {
      "word": "dab-handed"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dab#Etymology_2<t: an expert; an adept>",
        "3": "hand"
      },
      "expansion": "dab (“ an expert; an adept”) + hand",
      "name": "compound"
    }
  ],
  "etymology_text": "From dab (“ an expert; an adept”) + hand.",
  "forms": [
    {
      "form": "dab hands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dab hand (plural dab hands)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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              8,
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          "text": "She's a dab hand in the kitchen.",
          "type": "example"
        }
      ],
      "glosses": [
        "An expert; a very skilled person."
      ],
      "links": [
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          "expert",
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      "raw_glosses": [
        "(British) An expert; a very skilled person."
      ],
      "tags": [
        "British"
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  ],
  "translations": [
    {
      "code": "mi",
      "lang": "Maori",
      "lang_code": "mi",
      "sense": "an expert",
      "word": "ringarehe"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "lang_code": "ru",
      "roman": "spéc",
      "sense": "an expert",
      "tags": [
        "masculine"
      ],
      "word": "спе́ц"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "lang_code": "ru",
      "roman": "dóka",
      "sense": "an expert",
      "tags": [
        "masculine"
      ],
      "word": "до́ка"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "lang_code": "ru",
      "roman": "masták",
      "sense": "an expert",
      "tags": [
        "masculine"
      ],
      "word": "маста́к"
    }
  ],
  "word": "dab hand"
}