"срѣда" meaning in Vieux slave

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en vieux slave issus d’un mot en indo-européen commun",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Vieux slave",
      "orig": "vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Étymologies en vieux slave incluant une reconstruction",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "roman": "srĭdĭce",
      "translation": "cœur",
      "word": "срьдьцє"
    }
  ],
  "etymology_texts": [
    "De l’indo-européen commun *ḱḗrd (« cœur ») ; apparenté au latin cor, cordis, au grec καρδία, kardía (« cœur »)."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "srěda"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en vieux slave",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Centre, milieu, cœur."
      ],
      "id": "fr-срѣда-cu-noun-ylZZzBMO"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en vieux slave",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Mercredi, jour du milieu de la semaine."
      ],
      "id": "fr-срѣда-cu-noun-wy2fpUFj"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "срѣда"
}

{
  "categories": [
    "Mots en vieux slave issus d’un mot en indo-européen commun",
    "Noms communs en vieux slave",
    "vieux slave",
    "Étymologies en vieux slave incluant une reconstruction"
  ],
  "derived": [
    {
      "roman": "srĭdĭce",
      "translation": "cœur",
      "word": "срьдьцє"
    }
  ],
  "etymology_texts": [
    "De l’indo-européen commun *ḱḗrd (« cœur ») ; apparenté au latin cor, cordis, au grec καρδία, kardía (« cœur »)."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "srěda"
  ],
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en vieux slave"
      ],
      "glosses": [
        "Centre, milieu, cœur."
      ]
    },
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en vieux slave"
      ],
      "glosses": [
        "Mercredi, jour du milieu de la semaine."
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "срѣда"
}