"Greek system" meaning in All languages combined

{
  "etymology_text": "After the Greek letters used in naming these organisations.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "Greek system",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English 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": [
        "The system of fraternities and sororities in North American colleges."
      ],
      "id": "en-Greek_system-en-noun-IUIcCuzY",
      "links": [
        [
          "fraternities",
          "fraternity"
        ],
        [
          "sororities",
          "sorority"
        ]
      ],
      "related": [
        {
          "word": "Greek"
        }
      ],
      "wikipedia": [
        "Fraternities and sororities"
      ]
    }
  ],
  "word": "Greek system"
}

{
  "etymology_text": "After the Greek letters used in naming these organisations.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "Greek system",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Greek"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "The system of fraternities and sororities in North American colleges."
      ],
      "links": [
        [
          "fraternities",
          "fraternity"
        ],
        [
          "sororities",
          "sorority"
        ]
      ],
      "wikipedia": [
        "Fraternities and sororities"
      ]
    }
  ],
  "word": "Greek system"
}