"expert witness" meaning in English

{
  "forms": [
    {
      "form": "expert witnesses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "expert witness (plural expert witnesses)",
      "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": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Macedonian terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Greek translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Indonesian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Macedonian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Spanish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Swedish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Law",
          "orig": "en:Law",
          "parents": [
            "Justice",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "October 23 2012, Nicolas Bourcier in Guardian Weekly, Brazil comes to terms with its slave trading past\nIn a sensational decision this April the 10 supreme court judges unanimously ruled in favour of positive discrimination in higher education, declaring that the racial quotas in Brazilian universities were constitutional and redressed the \"social debt of slavery\". Dozens of expert witnesses were heard and the ruling was televised live."
        }
      ],
      "glosses": [
        "A witness that has expertise in a certain field."
      ],
      "id": "en-expert_witness-en-noun-f1JqBAXN",
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "witness",
          "witness"
        ],
        [
          "expertise",
          "expertise"
        ]
      ],
      "raw_glosses": [
        "(law) A witness that has expertise in a certain field."
      ],
      "topics": [
        "law"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "witness with topical expertise",
          "word": "asiantuntijatodistaja"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "witness with topical expertise",
          "word": "témoin expert"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "witness with topical expertise",
          "word": "Sachverständiger"
        },
        {
          "code": "el",
          "lang": "Greek",
          "roman": "pragmatognómonas",
          "sense": "witness with topical expertise",
          "tags": [
            "masculine"
          ],
          "word": "πραγματογνώμονας"
        },
        {
          "code": "el",
          "lang": "Greek",
          "roman": "pragmatognómon",
          "sense": "witness with topical expertise",
          "tags": [
            "masculine"
          ],
          "word": "πραγματογνώμων"
        },
        {
          "code": "id",
          "lang": "Indonesian",
          "sense": "witness with topical expertise",
          "word": "saksi ahli"
        },
        {
          "code": "mk",
          "lang": "Macedonian",
          "roman": "veštak",
          "sense": "witness with topical expertise",
          "tags": [
            "masculine"
          ],
          "word": "вештак"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "witness with topical expertise",
          "tags": [
            "masculine"
          ],
          "word": "biegły"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "witness with topical expertise",
          "tags": [
            "feminine"
          ],
          "word": "biegła"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "witness with topical expertise",
          "tags": [
            "feminine",
            "masculine"
          ],
          "word": "testigo pericial"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "witness with topical expertise",
          "tags": [
            "neuter"
          ],
          "word": "expertvittne"
        }
      ]
    }
  ],
  "word": "expert witness"
}

{
  "forms": [
    {
      "form": "expert witnesses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "expert witness (plural expert witnesses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Macedonian terms with redundant transliterations",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with French translations",
        "Terms with German translations",
        "Terms with Greek translations",
        "Terms with Indonesian translations",
        "Terms with Macedonian translations",
        "Terms with Polish translations",
        "Terms with Spanish translations",
        "Terms with Swedish translations",
        "en:Law",
        "en:People"
      ],
      "examples": [
        {
          "text": "October 23 2012, Nicolas Bourcier in Guardian Weekly, Brazil comes to terms with its slave trading past\nIn a sensational decision this April the 10 supreme court judges unanimously ruled in favour of positive discrimination in higher education, declaring that the racial quotas in Brazilian universities were constitutional and redressed the \"social debt of slavery\". Dozens of expert witnesses were heard and the ruling was televised live."
        }
      ],
      "glosses": [
        "A witness that has expertise in a certain field."
      ],
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "witness",
          "witness"
        ],
        [
          "expertise",
          "expertise"
        ]
      ],
      "raw_glosses": [
        "(law) A witness that has expertise in a certain field."
      ],
      "topics": [
        "law"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "witness with topical expertise",
      "word": "asiantuntijatodistaja"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "witness with topical expertise",
      "word": "témoin expert"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "witness with topical expertise",
      "word": "Sachverständiger"
    },
    {
      "code": "el",
      "lang": "Greek",
      "roman": "pragmatognómonas",
      "sense": "witness with topical expertise",
      "tags": [
        "masculine"
      ],
      "word": "πραγματογνώμονας"
    },
    {
      "code": "el",
      "lang": "Greek",
      "roman": "pragmatognómon",
      "sense": "witness with topical expertise",
      "tags": [
        "masculine"
      ],
      "word": "πραγματογνώμων"
    },
    {
      "code": "id",
      "lang": "Indonesian",
      "sense": "witness with topical expertise",
      "word": "saksi ahli"
    },
    {
      "code": "mk",
      "lang": "Macedonian",
      "roman": "veštak",
      "sense": "witness with topical expertise",
      "tags": [
        "masculine"
      ],
      "word": "вештак"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "witness with topical expertise",
      "tags": [
        "masculine"
      ],
      "word": "biegły"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "witness with topical expertise",
      "tags": [
        "feminine"
      ],
      "word": "biegła"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "witness with topical expertise",
      "tags": [
        "feminine",
        "masculine"
      ],
      "word": "testigo pericial"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "witness with topical expertise",
      "tags": [
        "neuter"
      ],
      "word": "expertvittne"
    }
  ],
  "word": "expert witness"
}