"Σύλβιος" meaning in Greek

{
  "forms": [
    {
      "form": "Sýlvios",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "proper noun",
        "g": "m"
      },
      "expansion": "Σύλβιος • (Sýlvios) m",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A shortened, everyday form of Συλβέστρος"
      ],
      "id": "en-Σύλβιος-el-name-p0ORBXii",
      "links": [
        [
          "Συλβέστρος",
          "Συλβέστρος"
        ]
      ],
      "related": [
        {
          "roman": "Sylviákos",
          "word": "Συλβιάκος"
        }
      ]
    }
  ],
  "word": "Σύλβιος"
}

{
  "forms": [
    {
      "form": "Sýlvios",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "proper noun",
        "g": "m"
      },
      "expansion": "Σύλβιος • (Sýlvios) m",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "name",
  "related": [
    {
      "roman": "Sylviákos",
      "word": "Συλβιάκος"
    }
  ],
  "senses": [
    {
      "categories": [
        "Greek entries with incorrect language header",
        "Greek lemmas",
        "Greek masculine nouns",
        "Greek proper nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A shortened, everyday form of Συλβέστρος"
      ],
      "links": [
        [
          "Συλβέστρος",
          "Συλβέστρος"
        ]
      ]
    }
  ],
  "word": "Σύλβιος"
}