"естъ" meaning in Old Church Slavonic

{
  "etymology_templates": [
    {
      "args": {
        "1": "cu",
        "2": "ine-bsl-pro",
        "3": "ine-pro",
        "inh": "1"
      },
      "expansion": "",
      "name": "dercat"
    },
    {
      "args": {
        "1": "cu",
        "2": "sla-pro",
        "3": "*estь"
      },
      "expansion": "Proto-Slavic *estь",
      "name": "inh"
    },
    {
      "args": {
        "1": "sa",
        "2": "अस्ति"
      },
      "expansion": "Sanskrit अस्ति (asti)",
      "name": "cog"
    },
    {
      "args": {
        "1": "grc",
        "2": "ἐστί"
      },
      "expansion": "Ancient Greek ἐστί (estí)",
      "name": "cog"
    },
    {
      "args": {
        "1": "peo",
        "2": "𐎠𐎿𐎫𐎡𐎹",
        "sc": "Xpeo",
        "ts": "astiy"
      },
      "expansion": "Old Persian 𐎠𐎿𐎫𐎡𐎹 (a-s-t-i-y /⁠astiy⁠/)",
      "name": "cog"
    },
    {
      "args": {
        "1": "hit",
        "2": "𒂊𒌍𒍣",
        "sc": "Xsux",
        "tr": "ēszi"
      },
      "expansion": "Hittite 𒂊𒌍𒍣 (ēszi)",
      "name": "cog"
    },
    {
      "args": {
        "1": "got",
        "2": "𐌹𐍃𐍄"
      },
      "expansion": "Gothic 𐌹𐍃𐍄 (ist)",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Slavic *estь.\nCognate with Sanskrit अस्ति (asti), Ancient Greek ἐστί (estí), Old Persian 𐎠𐎿𐎫𐎡𐎹 (a-s-t-i-y /⁠astiy⁠/), Hittite 𒂊𒌍𒍣 (ēszi) and Gothic 𐌹𐍃𐍄 (ist).",
  "forms": [
    {
      "form": "estŭ",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cu",
        "2": "verb form"
      },
      "expansion": "естъ • (estŭ)",
      "name": "head"
    }
  ],
  "lang": "Old Church Slavonic",
  "lang_code": "cu",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Church Slavonic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "byti",
          "word": "бꙑти"
        }
      ],
      "glosses": [
        "third-person singular present indicative of бꙑти (byti)"
      ],
      "id": "en-естъ-cu-verb-UHQKJjVe",
      "links": [
        [
          "бꙑти",
          "бꙑти#Old Church Slavonic"
        ]
      ],
      "synonyms": [
        {
          "roman": "jestŭ",
          "word": "ѥстъ"
        }
      ],
      "tags": [
        "form-of",
        "indicative",
        "present",
        "singular",
        "third-person"
      ]
    }
  ],
  "word": "естъ"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cu",
        "2": "ine-bsl-pro",
        "3": "ine-pro",
        "inh": "1"
      },
      "expansion": "",
      "name": "dercat"
    },
    {
      "args": {
        "1": "cu",
        "2": "sla-pro",
        "3": "*estь"
      },
      "expansion": "Proto-Slavic *estь",
      "name": "inh"
    },
    {
      "args": {
        "1": "sa",
        "2": "अस्ति"
      },
      "expansion": "Sanskrit अस्ति (asti)",
      "name": "cog"
    },
    {
      "args": {
        "1": "grc",
        "2": "ἐστί"
      },
      "expansion": "Ancient Greek ἐστί (estí)",
      "name": "cog"
    },
    {
      "args": {
        "1": "peo",
        "2": "𐎠𐎿𐎫𐎡𐎹",
        "sc": "Xpeo",
        "ts": "astiy"
      },
      "expansion": "Old Persian 𐎠𐎿𐎫𐎡𐎹 (a-s-t-i-y /⁠astiy⁠/)",
      "name": "cog"
    },
    {
      "args": {
        "1": "hit",
        "2": "𒂊𒌍𒍣",
        "sc": "Xsux",
        "tr": "ēszi"
      },
      "expansion": "Hittite 𒂊𒌍𒍣 (ēszi)",
      "name": "cog"
    },
    {
      "args": {
        "1": "got",
        "2": "𐌹𐍃𐍄"
      },
      "expansion": "Gothic 𐌹𐍃𐍄 (ist)",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Slavic *estь.\nCognate with Sanskrit अस्ति (asti), Ancient Greek ἐστί (estí), Old Persian 𐎠𐎿𐎫𐎡𐎹 (a-s-t-i-y /⁠astiy⁠/), Hittite 𒂊𒌍𒍣 (ēszi) and Gothic 𐌹𐍃𐍄 (ist).",
  "forms": [
    {
      "form": "estŭ",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cu",
        "2": "verb form"
      },
      "expansion": "естъ • (estŭ)",
      "name": "head"
    }
  ],
  "lang": "Old Church Slavonic",
  "lang_code": "cu",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Old Church Slavonic entries with incorrect language header",
        "Old Church Slavonic non-lemma forms",
        "Old Church Slavonic terms derived from Proto-Balto-Slavic",
        "Old Church Slavonic terms derived from Proto-Indo-European",
        "Old Church Slavonic terms derived from Proto-Slavic",
        "Old Church Slavonic terms inherited from Proto-Balto-Slavic",
        "Old Church Slavonic terms inherited from Proto-Slavic",
        "Old Church Slavonic verb forms"
      ],
      "form_of": [
        {
          "extra": "byti",
          "word": "бꙑти"
        }
      ],
      "glosses": [
        "third-person singular present indicative of бꙑти (byti)"
      ],
      "links": [
        [
          "бꙑти",
          "бꙑти#Old Church Slavonic"
        ]
      ],
      "tags": [
        "form-of",
        "indicative",
        "present",
        "singular",
        "third-person"
      ]
    }
  ],
  "synonyms": [
    {
      "roman": "jestŭ",
      "word": "ѥстъ"
    }
  ],
  "word": "естъ"
}