"jestli" meaning in Old Czech

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "cs",
            "2": "jestli"
          },
          "expansion": "Czech: jestli",
          "name": "desc"
        }
      ],
      "text": "Czech: jestli"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "zlw-ocs",
        "2": "być<alt:jest>",
        "3": "li"
      },
      "expansion": "Univerbation of jest + li",
      "name": "univ"
    },
    {
      "args": {
        "1": "zlw-opl",
        "2": "jestli"
      },
      "expansion": "Old Polish jestli",
      "name": "cog"
    }
  ],
  "etymology_text": "Univerbation of jest + li. Compare Old Polish jestli.",
  "head_templates": [
    {
      "args": {
        "1": "zlw-ocs",
        "2": "conjunction"
      },
      "expansion": "jestli",
      "name": "head"
    }
  ],
  "lang": "Old Czech",
  "lang_code": "zlw-ocs",
  "pos": "conj",
  "senses": [
    {
      "categories": [
        {
          "_dis": "0 21 18 20 21 20",
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "0 21 18 20 21 20",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Old Czech entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "48 52",
          "kind": "other",
          "name": "Old Czech univerbations",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Introduces a subordinate content clause; whether, if"
      ],
      "id": "en-jestli-zlw-ocs-conj-0Sq2EbBj",
      "links": [
        [
          "whether",
          "whether"
        ],
        [
          "if",
          "if"
        ]
      ],
      "synonyms": [
        {
          "word": "zda"
        },
        {
          "word": "zdali"
        },
        {
          "word": "či"
        }
      ]
    },
    {
      "categories": [
        {
          "_dis": "0 21 18 20 21 20",
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "0 21 18 20 21 20",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Old Czech entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "48 52",
          "kind": "other",
          "name": "Old Czech univerbations",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Introduces a conditional; if"
      ],
      "id": "en-jestli-zlw-ocs-conj-wZQkyBQw",
      "links": [
        [
          "if",
          "if"
        ]
      ],
      "synonyms": [
        {
          "word": "jestliže"
        },
        {
          "word": "když"
        },
        {
          "word": "pokud"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈjɛstli/",
      "note": "13ᵗʰ CE"
    },
    {
      "ipa": "/ˈjɛstli/",
      "note": "15ᵗʰ CE"
    }
  ],
  "word": "jestli"
}

{
  "categories": [
    "Old Czech conjunctions",
    "Old Czech entries with incorrect language header",
    "Old Czech lemmas",
    "Old Czech terms with IPA pronunciation",
    "Old Czech univerbations",
    "Pages with 4 entries",
    "Pages with entries"
  ],
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "cs",
            "2": "jestli"
          },
          "expansion": "Czech: jestli",
          "name": "desc"
        }
      ],
      "text": "Czech: jestli"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "zlw-ocs",
        "2": "być<alt:jest>",
        "3": "li"
      },
      "expansion": "Univerbation of jest + li",
      "name": "univ"
    },
    {
      "args": {
        "1": "zlw-opl",
        "2": "jestli"
      },
      "expansion": "Old Polish jestli",
      "name": "cog"
    }
  ],
  "etymology_text": "Univerbation of jest + li. Compare Old Polish jestli.",
  "head_templates": [
    {
      "args": {
        "1": "zlw-ocs",
        "2": "conjunction"
      },
      "expansion": "jestli",
      "name": "head"
    }
  ],
  "lang": "Old Czech",
  "lang_code": "zlw-ocs",
  "pos": "conj",
  "senses": [
    {
      "glosses": [
        "Introduces a subordinate content clause; whether, if"
      ],
      "links": [
        [
          "whether",
          "whether"
        ],
        [
          "if",
          "if"
        ]
      ],
      "synonyms": [
        {
          "word": "zda"
        },
        {
          "word": "zdali"
        },
        {
          "word": "či"
        }
      ]
    },
    {
      "glosses": [
        "Introduces a conditional; if"
      ],
      "links": [
        [
          "if",
          "if"
        ]
      ],
      "synonyms": [
        {
          "word": "jestliže"
        },
        {
          "word": "když"
        },
        {
          "word": "pokud"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈjɛstli/",
      "note": "13ᵗʰ CE"
    },
    {
      "ipa": "/ˈjɛstli/",
      "note": "15ᵗʰ CE"
    }
  ],
  "word": "jestli"
}