"ostraco" meaning in Italian

{
  "forms": [
    {
      "form": "ostraci",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "ostraco m (plural ostraci)",
      "name": "it-noun"
    }
  ],
  "hyphenation": [
    "ò‧stra‧co"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "ostracum"
      ],
      "id": "en-ostraco-it-noun-R0i2PQSN",
      "links": [
        [
          "ostracum",
          "ostracum"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈɔ.stra.ko/"
    },
    {
      "rhymes": "-ɔstrako"
    }
  ],
  "word": "ostraco"
}

{
  "forms": [
    {
      "form": "ostraci",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "ostraco m (plural ostraci)",
      "name": "it-noun"
    }
  ],
  "hyphenation": [
    "ò‧stra‧co"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Italian 3-syllable words",
        "Italian countable nouns",
        "Italian entries with incorrect language header",
        "Italian lemmas",
        "Italian masculine nouns",
        "Italian nouns",
        "Italian terms with IPA pronunciation",
        "Rhymes:Italian/ɔstrako",
        "Rhymes:Italian/ɔstrako/3 syllables"
      ],
      "glosses": [
        "ostracum"
      ],
      "links": [
        [
          "ostracum",
          "ostracum"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈɔ.stra.ko/"
    },
    {
      "rhymes": "-ɔstrako"
    }
  ],
  "word": "ostraco"
}