"proper adjective" meaning in English

{
  "forms": [
    {
      "form": "proper adjectives",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "proper adjective (plural proper adjectives)",
      "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": "other",
          "langcode": "en",
          "name": "Adjectives",
          "orig": "en:Adjectives",
          "parents": [
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Grammar",
          "orig": "en:Grammar",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1859, William Harvey Wells, A Grammar of the English Language: For the Use of Schools",
          "text": "These two general classes of adjectives may also be divided into several others, of which the following are the most important: — 1. A proper adjective is one that is derived from a proper name; as, American . . .",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An adjective derived from a proper noun, such as British derived from Britain."
      ],
      "id": "en-proper_adjective-en-noun-0wYCH4im",
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "proper noun",
          "proper noun"
        ],
        [
          "British",
          "British"
        ],
        [
          "Britain",
          "Britain"
        ]
      ],
      "raw_glosses": [
        "(grammar) An adjective derived from a proper noun, such as British derived from Britain."
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "adjective derived from a proper noun",
          "word": "專有形容詞"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "zhuānyǒu xíngróngcí",
          "sense": "adjective derived from a proper noun",
          "word": "专有形容词"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "adjective derived from a proper noun",
          "word": "erisnimestä muodostettu adjektiivi"
        }
      ],
      "wikipedia": [
        "proper adjective"
      ]
    }
  ],
  "word": "proper adjective"
}

{
  "forms": [
    {
      "form": "proper adjectives",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "proper adjective (plural proper adjectives)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "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",
        "en:Adjectives",
        "en:Grammar"
      ],
      "examples": [
        {
          "ref": "1859, William Harvey Wells, A Grammar of the English Language: For the Use of Schools",
          "text": "These two general classes of adjectives may also be divided into several others, of which the following are the most important: — 1. A proper adjective is one that is derived from a proper name; as, American . . .",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An adjective derived from a proper noun, such as British derived from Britain."
      ],
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "proper noun",
          "proper noun"
        ],
        [
          "British",
          "British"
        ],
        [
          "Britain",
          "Britain"
        ]
      ],
      "raw_glosses": [
        "(grammar) An adjective derived from a proper noun, such as British derived from Britain."
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ],
      "wikipedia": [
        "proper adjective"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "adjective derived from a proper noun",
      "word": "專有形容詞"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "zhuānyǒu xíngróngcí",
      "sense": "adjective derived from a proper noun",
      "word": "专有形容词"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "adjective derived from a proper noun",
      "word": "erisnimestä muodostettu adjektiivi"
    }
  ],
  "word": "proper adjective"
}