"meg" meaning in Esperanto

{
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "mega-"
      },
      "expansion": "Back-formation from mega-",
      "name": "back-form"
    }
  ],
  "etymology_text": "Back-formation from mega-.",
  "hyphenation": [
    "meg"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Esperanto back-formations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto neologisms",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 9 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "million, 10⁶"
      ],
      "id": "en-meg-eo-num-rismgIYD",
      "links": [
        [
          "million",
          "million"
        ]
      ],
      "raw_glosses": [
        "(neologism, rare) million, 10⁶"
      ],
      "synonyms": [
        {
          "word": "miliono"
        }
      ],
      "tags": [
        "neologism",
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[meɡ]"
    }
  ],
  "word": "meg"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "mega-"
      },
      "expansion": "Back-formation from mega-",
      "name": "back-form"
    }
  ],
  "etymology_text": "Back-formation from mega-.",
  "hyphenation": [
    "meg"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Esperanto back-formations",
        "Esperanto entries with incorrect language header",
        "Esperanto lemmas",
        "Esperanto neologisms",
        "Esperanto numerals",
        "Esperanto terms with IPA pronunciation",
        "Esperanto terms with rare senses",
        "Pages with 9 entries",
        "Pages with entries"
      ],
      "glosses": [
        "million, 10⁶"
      ],
      "links": [
        [
          "million",
          "million"
        ]
      ],
      "raw_glosses": [
        "(neologism, rare) million, 10⁶"
      ],
      "tags": [
        "neologism",
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[meɡ]"
    }
  ],
  "synonyms": [
    {
      "word": "miliono"
    }
  ],
  "word": "meg"
}