"es-" meaning in Old Spanish

{
  "descendants": [
    {
      "lang": "Spanish",
      "lang_code": "es",
      "word": "es-"
    }
  ],
  "etymology_links": [
    [
      "ex-",
      "ex-#Latin"
    ]
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "osp",
        "2": ":inh",
        "3": "la:ex-<t:out of>",
        "text": "+"
      },
      "expansion": "[Appendix:Glossary#inherited|Inherited]] from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-Italic\", \"term\" : \"*eks\", \"status\" : \"ok\", \"lang\" : \"itc-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Latin\", \"term\" : \"ex\", \"lang\" : \"la\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Latin\", \"term\" : \"ex-\", \"status\" : \"ok\", \"lang\" : \"la\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Old Spanish\", \"term\" : \"es-\", \"status\" : \"ok\", \"lang\" : \"osp\" }\" data-lang=\"osp\" data-title=\"es-\">\nInherited from Latin ex- (“out of”).",
      "name": "etymon"
    }
  ],
  "etymology_text": "Inherited from Latin ex- (“out of”).",
  "head_templates": [
    {
      "args": {
        "1": "osp",
        "2": "prefix"
      },
      "expansion": "es-",
      "name": "head"
    }
  ],
  "lang": "Old Spanish",
  "lang_code": "osp",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Entries with collapsible category trees for nonexistent categories",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Old Spanish entries with etymology texts",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Old Spanish entries with etymon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Old Spanish entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using etymon with no ID",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 14 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with etymon",
          "parents": [],
          "source": "w"
        }
      ],
      "id": "en-es--osp-prefix-47DEQpj8",
      "tags": [
        "morpheme",
        "no-gloss"
      ]
    }
  ],
  "word": "es-"
}

{
  "descendants": [
    {
      "lang": "Spanish",
      "lang_code": "es",
      "word": "es-"
    }
  ],
  "etymology_links": [
    [
      "ex-",
      "ex-#Latin"
    ]
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "osp",
        "2": ":inh",
        "3": "la:ex-<t:out of>",
        "text": "+"
      },
      "expansion": "[Appendix:Glossary#inherited|Inherited]] from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-Italic\", \"term\" : \"*eks\", \"status\" : \"ok\", \"lang\" : \"itc-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Latin\", \"term\" : \"ex\", \"lang\" : \"la\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Latin\", \"term\" : \"ex-\", \"status\" : \"ok\", \"lang\" : \"la\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Old Spanish\", \"term\" : \"es-\", \"status\" : \"ok\", \"lang\" : \"osp\" }\" data-lang=\"osp\" data-title=\"es-\">\nInherited from Latin ex- (“out of”).",
      "name": "etymon"
    }
  ],
  "etymology_text": "Inherited from Latin ex- (“out of”).",
  "head_templates": [
    {
      "args": {
        "1": "osp",
        "2": "prefix"
      },
      "expansion": "es-",
      "name": "head"
    }
  ],
  "lang": "Old Spanish",
  "lang_code": "osp",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Entries with collapsible category trees for nonexistent categories",
        "Old Spanish entries with etymology texts",
        "Old Spanish entries with etymon",
        "Old Spanish entries with incorrect language header",
        "Old Spanish lemmas",
        "Old Spanish prefixes",
        "Old Spanish terms derived from Latin",
        "Old Spanish terms derived from Proto-Indo-European",
        "Old Spanish terms derived from Proto-Italic",
        "Old Spanish terms derived from the Proto-Indo-European word *h₁éǵʰ",
        "Old Spanish terms derived from the Proto-Indo-European word *h₁éǵʰs",
        "Old Spanish terms inherited from Latin",
        "Old Spanish terms inherited from Proto-Indo-European",
        "Old Spanish terms inherited from Proto-Italic",
        "Pages using catfix",
        "Pages using etymon with no ID",
        "Pages with 14 entries",
        "Pages with entries",
        "Pages with etymon"
      ],
      "tags": [
        "morpheme",
        "no-gloss"
      ]
    }
  ],
  "word": "es-"
}