"сера" meaning in Biélorusse

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en biélorusse issus d’un mot en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en biélorusse",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Biélorusse",
      "orig": "biélorusse",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Éléments chimiques en biélorusse",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du vieux slave сѣра, sěra → voir síra en tchèque."
  ],
  "lang": "Biélorusse",
  "lang_code": "be",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Soufre."
      ],
      "id": "fr-сера-be-noun-Q1i75xhq",
      "topics": [
        "chemistry"
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "сера"
}

{
  "categories": [
    "Mots en biélorusse issus d’un mot en vieux slave",
    "Noms communs en biélorusse",
    "biélorusse",
    "Éléments chimiques en biélorusse"
  ],
  "etymology_texts": [
    "Du vieux slave сѣра, sěra → voir síra en tchèque."
  ],
  "lang": "Biélorusse",
  "lang_code": "be",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Soufre."
      ],
      "topics": [
        "chemistry"
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "сера"
}