"čь" meaning in Proto-Slavic

{
  "descendants": [
    {
      "depth": 1,
      "templates": [],
      "text": "South Slavic:"
    },
    {
      "depth": 2,
      "templates": [],
      "text": "Serbo-Croatian: (occurring in the Čakavian dialects, which are named for their use of this pronoun)"
    },
    {
      "depth": 2,
      "templates": [],
      "text": "Latin: čȁ"
    },
    {
      "depth": 1,
      "templates": [],
      "text": "West Slavic:"
    },
    {
      "depth": 2,
      "templates": [
        {
          "args": {
            "1": "cs",
            "2": "č"
          },
          "expansion": "Czech: č",
          "name": "desc"
        }
      ],
      "text": "Czech: č (in contractions like oč, več, zač)"
    },
    {
      "depth": 2,
      "templates": [
        {
          "args": {
            "1": "zlw-opl",
            "2": "cz"
          },
          "expansion": "Old Polish: cz",
          "name": "desc"
        }
      ],
      "text": "Old Polish: cz (in contractions like ocz, wecz, zacz)"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "sla-pro",
        "2": "ine-bsl-pro",
        "3": "*ki"
      },
      "expansion": "Proto-Balto-Slavic *ki",
      "name": "inh"
    },
    {
      "args": {
        "1": "sla-pro",
        "2": "ine-pro",
        "3": "*kʷíd"
      },
      "expansion": "Proto-Indo-European *kʷíd",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Balto-Slavic *ki, from Proto-Indo-European *kʷíd.",
  "head_templates": [
    {
      "args": {
        "1": "sla-pro",
        "2": "pronoun",
        "cat2": "",
        "cat3": "interrogative pronouns",
        "head": "",
        "sort": ""
      },
      "expansion": "*čь",
      "name": "head"
    }
  ],
  "lang": "Proto-Slavic",
  "lang_code": "sla-pro",
  "original_title": "Reconstruction:Proto-Slavic/čь",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Proto-Slavic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Proto-Slavic interrogative pronouns",
          "parents": [
            "Interrogative pronouns",
            "Interrogative pro-forms",
            "Pronouns",
            "Pro-forms",
            "Lemmas",
            "Terms by semantic function"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Proto-Slavic pronouns",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "what; alternative form of *čьto"
      ],
      "id": "en-čь-sla-pro-pron-lrTflBcs",
      "links": [
        [
          "what",
          "what"
        ],
        [
          "*čьto",
          "Reconstruction:Proto-Slavic/čьto"
        ]
      ],
      "tags": [
        "reconstruction"
      ]
    }
  ],
  "word": "čь"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [],
      "text": "South Slavic:"
    },
    {
      "depth": 2,
      "templates": [],
      "text": "Serbo-Croatian: (occurring in the Čakavian dialects, which are named for their use of this pronoun)"
    },
    {
      "depth": 2,
      "templates": [],
      "text": "Latin: čȁ"
    },
    {
      "depth": 1,
      "templates": [],
      "text": "West Slavic:"
    },
    {
      "depth": 2,
      "templates": [
        {
          "args": {
            "1": "cs",
            "2": "č"
          },
          "expansion": "Czech: č",
          "name": "desc"
        }
      ],
      "text": "Czech: č (in contractions like oč, več, zač)"
    },
    {
      "depth": 2,
      "templates": [
        {
          "args": {
            "1": "zlw-opl",
            "2": "cz"
          },
          "expansion": "Old Polish: cz",
          "name": "desc"
        }
      ],
      "text": "Old Polish: cz (in contractions like ocz, wecz, zacz)"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "sla-pro",
        "2": "ine-bsl-pro",
        "3": "*ki"
      },
      "expansion": "Proto-Balto-Slavic *ki",
      "name": "inh"
    },
    {
      "args": {
        "1": "sla-pro",
        "2": "ine-pro",
        "3": "*kʷíd"
      },
      "expansion": "Proto-Indo-European *kʷíd",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Balto-Slavic *ki, from Proto-Indo-European *kʷíd.",
  "head_templates": [
    {
      "args": {
        "1": "sla-pro",
        "2": "pronoun",
        "cat2": "",
        "cat3": "interrogative pronouns",
        "head": "",
        "sort": ""
      },
      "expansion": "*čь",
      "name": "head"
    }
  ],
  "lang": "Proto-Slavic",
  "lang_code": "sla-pro",
  "original_title": "Reconstruction:Proto-Slavic/čь",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        "Proto-Slavic entries with incorrect language header",
        "Proto-Slavic interrogative pronouns",
        "Proto-Slavic lemmas",
        "Proto-Slavic pronouns",
        "Proto-Slavic terms derived from Proto-Balto-Slavic",
        "Proto-Slavic terms derived from Proto-Indo-European",
        "Proto-Slavic terms inherited from Proto-Balto-Slavic",
        "Proto-Slavic terms inherited from Proto-Indo-European"
      ],
      "glosses": [
        "what; alternative form of *čьto"
      ],
      "links": [
        [
          "what",
          "what"
        ],
        [
          "*čьto",
          "Reconstruction:Proto-Slavic/čьto"
        ]
      ],
      "tags": [
        "reconstruction"
      ]
    }
  ],
  "word": "čь"
}