"Ἀλεξάνδρῳ τῷ Μεγάλῳ" meaning in Grec ancien

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de noms propres en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Grec ancien",
      "orig": "grec ancien",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Grec ancien",
  "lang_code": "grc",
  "pos": "name",
  "pos_title": "Forme de nom propre",
  "raw_tags": [
    "Ἀλεξάνδρῳ τῷ Μεγάλῳ, Alexándrōi tôi Megálōi"
  ],
  "senses": [
    {
      "form_of": [
        {
          "word": "Ἀλέξανδρος ὁ Μέγας"
        }
      ],
      "glosses": [
        "Datif de Ἀλέξανδρος ὁ Μέγας."
      ],
      "id": "fr-Ἀλεξάνδρῳ_τῷ_Μεγάλῳ-grc-name-SEDkYcU-"
    }
  ],
  "sounds": [
    {
      "ipa": "\\a.lek.sán.drɔːi̯ tɔ̂ːi̯ me.ɡá.lɔːi̯\\"
    }
  ],
  "tags": [
    "form-of",
    "masculine"
  ],
  "word": "Ἀλεξάνδρῳ τῷ Μεγάλῳ"
}

{
  "categories": [
    "Formes de noms propres en grec ancien",
    "grec ancien"
  ],
  "lang": "Grec ancien",
  "lang_code": "grc",
  "pos": "name",
  "pos_title": "Forme de nom propre",
  "raw_tags": [
    "Ἀλεξάνδρῳ τῷ Μεγάλῳ, Alexándrōi tôi Megálōi"
  ],
  "senses": [
    {
      "form_of": [
        {
          "word": "Ἀλέξανδρος ὁ Μέγας"
        }
      ],
      "glosses": [
        "Datif de Ἀλέξανδρος ὁ Μέγας."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\a.lek.sán.drɔːi̯ tɔ̂ːi̯ me.ɡá.lɔːi̯\\"
    }
  ],
  "tags": [
    "form-of",
    "masculine"
  ],
  "word": "Ἀλεξάνδρῳ τῷ Μεγάλῳ"
}