"Mercurius" meaning in Estonian

{
  "head_templates": [
    {
      "args": {
        "1": "et",
        "2": "proper noun"
      },
      "expansion": "Mercurius",
      "name": "head"
    }
  ],
  "lang": "Estonian",
  "lang_code": "et",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Estonian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 6 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "et",
          "name": "Roman deities",
          "orig": "et:Roman deities",
          "parents": [
            "Gods",
            "Roman mythology",
            "Religion",
            "Ancient Rome",
            "Mythology",
            "Culture",
            "Ancient Africa",
            "Ancient Europe",
            "Ancient history",
            "Ancient Near East",
            "History of Italy",
            "Society",
            "History of Africa",
            "History of Europe",
            "History",
            "Ancient Asia",
            "Italy",
            "All topics",
            "Africa",
            "Europe",
            "History of Asia",
            "Fundamental",
            "Earth",
            "Eurasia",
            "Asia",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Mercury"
      ],
      "id": "en-Mercurius-et-name-et:Q1150",
      "links": [
        [
          "Mercury",
          "Mercury"
        ]
      ],
      "senseid": [
        "et:Q1150"
      ],
      "wikidata": [
        "Q1150"
      ]
    }
  ],
  "word": "Mercurius"
}

{
  "head_templates": [
    {
      "args": {
        "1": "et",
        "2": "proper noun"
      },
      "expansion": "Mercurius",
      "name": "head"
    }
  ],
  "lang": "Estonian",
  "lang_code": "et",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Estonian entries with incorrect language header",
        "Estonian lemmas",
        "Estonian proper nouns",
        "Estonian terms spelled with C",
        "Pages with 6 entries",
        "Pages with entries",
        "et:Roman deities"
      ],
      "glosses": [
        "Mercury"
      ],
      "links": [
        [
          "Mercury",
          "Mercury"
        ]
      ],
      "senseid": [
        "et:Q1150"
      ],
      "wikidata": [
        "Q1150"
      ]
    }
  ],
  "word": "Mercurius"
}