"sin" meaning in Croate

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en croate issus d’un mot en proto-slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en croate issus d’un mot en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en croate",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Croate",
      "orig": "croate",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Étymologies en croate incluant une reconstruction",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du vieux slave сынъ, synŭ lui même du proto-slave *synъ."
  ],
  "lang": "Croate",
  "lang_code": "hr",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "syn"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en croate de la famille",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en croate",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Fils."
      ],
      "id": "fr-sin-hr-noun-UmGvxinA",
      "raw_tags": [
        "Famille"
      ]
    }
  ],
  "word": "sin"
}

{
  "categories": [
    "Mots en croate issus d’un mot en proto-slave",
    "Mots en croate issus d’un mot en vieux slave",
    "Noms communs en croate",
    "croate",
    "Étymologies en croate incluant une reconstruction"
  ],
  "etymology_texts": [
    "Du vieux slave сынъ, synŭ lui même du proto-slave *synъ."
  ],
  "lang": "Croate",
  "lang_code": "hr",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "syn"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en croate de la famille",
        "Wiktionnaire:Exemples manquants en croate"
      ],
      "glosses": [
        "Fils."
      ],
      "raw_tags": [
        "Famille"
      ]
    }
  ],
  "word": "sin"
}