"Proto-Czech" meaning in English

{
  "head_templates": [
    {
      "args": {
        "head": "Proto-Czech"
      },
      "expansion": "Proto-Czech",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Czech translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Slovak translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Languages",
          "orig": "en:Languages",
          "parents": [
            "Language",
            "Names",
            "Communication",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2014, Sebastian Kempgen, “Abstract”, in Die slavischen Sprachen / The Slavic Languages, Berlin: Walter de Gruyter GmbH, →ISBN, page 1384:",
          "text": "Proto-Czech can be differentiated from Proto-Polish and Proto-Slovak from the end of the 10th century.",
          "type": "quote"
        }
      ],
      "glosses": [
        "ancestor language of the Czech language, descendant of Proto-Slavic, spoken between the 10th and 13th century"
      ],
      "id": "en-Proto-Czech-en-name-B1SJNU2-",
      "links": [
        [
          "ancestor",
          "ancestor"
        ],
        [
          "Czech",
          "Czech"
        ],
        [
          "Proto-Slavic",
          "Proto-Slavic"
        ]
      ],
      "related": [
        {
          "word": "Czech"
        },
        {
          "word": "Old Czech"
        }
      ],
      "translations": [
        {
          "code": "cs",
          "lang": "Czech",
          "sense": "ancestor language of Czech",
          "tags": [
            "feminine"
          ],
          "word": "pračeština"
        },
        {
          "code": "sk",
          "lang": "Slovak",
          "sense": "ancestor language of Czech",
          "tags": [
            "feminine"
          ],
          "word": "pračeština"
        }
      ]
    }
  ],
  "word": "Proto-Czech"
}

{
  "head_templates": [
    {
      "args": {
        "head": "Proto-Czech"
      },
      "expansion": "Proto-Czech",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "related": [
    {
      "word": "Czech"
    },
    {
      "word": "Old Czech"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Czech translations",
        "Terms with Slovak translations",
        "en:Languages"
      ],
      "examples": [
        {
          "ref": "2014, Sebastian Kempgen, “Abstract”, in Die slavischen Sprachen / The Slavic Languages, Berlin: Walter de Gruyter GmbH, →ISBN, page 1384:",
          "text": "Proto-Czech can be differentiated from Proto-Polish and Proto-Slovak from the end of the 10th century.",
          "type": "quote"
        }
      ],
      "glosses": [
        "ancestor language of the Czech language, descendant of Proto-Slavic, spoken between the 10th and 13th century"
      ],
      "links": [
        [
          "ancestor",
          "ancestor"
        ],
        [
          "Czech",
          "Czech"
        ],
        [
          "Proto-Slavic",
          "Proto-Slavic"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "ancestor language of Czech",
      "tags": [
        "feminine"
      ],
      "word": "pračeština"
    },
    {
      "code": "sk",
      "lang": "Slovak",
      "sense": "ancestor language of Czech",
      "tags": [
        "feminine"
      ],
      "word": "pračeština"
    }
  ],
  "word": "Proto-Czech"
}