"Τζακ" meaning in Greek

{
  "forms": [
    {
      "form": "Tzak",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "proper noun"
      },
      "expansion": "Τζακ • (Tzak)",
      "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": "topical",
          "name": "Greek renderings of English male given names",
          "parents": [
            "Male given names",
            "Given names",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Greek renderings of English surnames",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A transliteration of the English male given name and surname Jack."
      ],
      "id": "en-Τζακ-el-name-paX8p2Jk",
      "links": [
        [
          "Jack",
          "Jack#English"
        ]
      ]
    }
  ],
  "word": "Τζακ"
}

{
  "forms": [
    {
      "form": "Tzak",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "proper noun"
      },
      "expansion": "Τζακ • (Tzak)",
      "name": "head"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Greek entries with incorrect language header",
        "Greek lemmas",
        "Greek proper nouns",
        "Greek renderings of English male given names",
        "Greek renderings of English surnames",
        "Greek terms borrowed from English",
        "Greek terms derived from English"
      ],
      "glosses": [
        "A transliteration of the English male given name and surname Jack."
      ],
      "links": [
        [
          "Jack",
          "Jack#English"
        ]
      ]
    }
  ],
  "word": "Τζακ"
}