"friend of court" meaning in English

{
  "forms": [
    {
      "form": "friends of court",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "friends of court"
      },
      "expansion": "friend of court (plural friends of court)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1985 April 20, Marcos Bisticas-Cocoves, “Idaho House Defeats Anti-gay Bill”, in Gay Community News, page 2",
          "text": "The bill […] was introduced after the Idaho Education Association filed a \"friend of court\" brief against a similar Oklahoma law that was challenged by the National Gay Task Force (NGTF) […] and struck down by a tie vote of the U.S. Supreme Court on March 26.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of amicus curiae"
      ],
      "id": "en-friend_of_court-en-noun-Wb5nRY8d",
      "links": [
        [
          "amicus curiae",
          "amicus curiae#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "amicus curiae"
        }
      ]
    }
  ],
  "word": "friend of court"
}

{
  "forms": [
    {
      "form": "friends of court",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "friends of court"
      },
      "expansion": "friend of court (plural friends of court)",
      "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",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1985 April 20, Marcos Bisticas-Cocoves, “Idaho House Defeats Anti-gay Bill”, in Gay Community News, page 2",
          "text": "The bill […] was introduced after the Idaho Education Association filed a \"friend of court\" brief against a similar Oklahoma law that was challenged by the National Gay Task Force (NGTF) […] and struck down by a tie vote of the U.S. Supreme Court on March 26.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of amicus curiae"
      ],
      "links": [
        [
          "amicus curiae",
          "amicus curiae#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "amicus curiae"
        }
      ]
    }
  ],
  "word": "friend of court"
}