"D20" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "De D de die (« dé à jouer ») et de 20 signifiant les vingt faces."
  ],
  "forms": [
    {
      "form": "D20s",
      "ipas": [
        "\\ˌdi ˈtwɛn.tiz\\",
        "\\ˌdiː ˈtwɛn.tiz\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "d20"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en anglais des jeux",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Variante orthographique de d20 (« D20 »)."
      ],
      "id": "fr-D20-en-noun-NiLYA8vH",
      "tags": [
        "alt-of"
      ],
      "topics": [
        "games"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˌdi ˈtwɛn.ti\\",
      "raw_tags": [
        "États-Unis"
      ]
    },
    {
      "ipa": "\\ˌdiː ˈtwɛn.ti\\",
      "raw_tags": [
        "Royaume-Uni"
      ]
    }
  ],
  "word": "D20"
}

{
  "categories": [
    "Lemmes en anglais",
    "Noms communs en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "De D de die (« dé à jouer ») et de 20 signifiant les vingt faces."
  ],
  "forms": [
    {
      "form": "D20s",
      "ipas": [
        "\\ˌdi ˈtwɛn.tiz\\",
        "\\ˌdiː ˈtwɛn.tiz\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "d20"
        }
      ],
      "categories": [
        "Lexique en anglais des jeux"
      ],
      "glosses": [
        "Variante orthographique de d20 (« D20 »)."
      ],
      "tags": [
        "alt-of"
      ],
      "topics": [
        "games"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˌdi ˈtwɛn.ti\\",
      "raw_tags": [
        "États-Unis"
      ]
    },
    {
      "ipa": "\\ˌdiː ˈtwɛn.ti\\",
      "raw_tags": [
        "Royaume-Uni"
      ]
    }
  ],
  "word": "D20"
}