"MLB" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "en",
        "3": "MLB",
        "t": "Major League Baseball"
      },
      "expansion": "Borrowed from English MLB (“Major League Baseball”)",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from English MLB (“Major League Baseball”).",
  "forms": [
    {
      "form": "MLB",
      "ruby": [
        [
          "MLB",
          "エムエルビー"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "Emu-eru-bī",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "proper noun",
        "2": "^エム-エル-ビー"
      },
      "expansion": "MLB(エムエルビー) • (Emu-eru-bī)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Major League Baseball",
          "word": "メジャーリーグベースボール"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with multiple readings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "ja",
          "name": "Baseball",
          "orig": "ja:Baseball",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "abbreviation of メジャーリーグベースボール (“Major League Baseball”)"
      ],
      "id": "en-MLB-ja-name-MagdL5AA",
      "links": [
        [
          "baseball",
          "baseball"
        ],
        [
          "メジャーリーグベースボール",
          "メジャーリーグベースボール#Japanese"
        ]
      ],
      "raw_glosses": [
        "(baseball) abbreviation of メジャーリーグベースボール (“Major League Baseball”)"
      ],
      "synonyms": [
        {
          "word": "メジャーリーグ"
        },
        {
          "word": "大リーグ"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
      "topics": [
        "ball-games",
        "baseball",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[e̞mɯ̟e̞ɾɯ̟bʲiː]"
    }
  ],
  "word": "MLB"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "en",
        "3": "MLB",
        "t": "Major League Baseball"
      },
      "expansion": "Borrowed from English MLB (“Major League Baseball”)",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from English MLB (“Major League Baseball”).",
  "forms": [
    {
      "form": "MLB",
      "ruby": [
        [
          "MLB",
          "エムエルビー"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "Emu-eru-bī",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "proper noun",
        "2": "^エム-エル-ビー"
      },
      "expansion": "MLB(エムエルビー) • (Emu-eru-bī)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Major League Baseball",
          "word": "メジャーリーグベースボール"
        }
      ],
      "categories": [
        "Japanese abbreviations",
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese proper nouns",
        "Japanese terms borrowed from English",
        "Japanese terms derived from English",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with IPA pronunciation missing pitch accent",
        "Japanese terms with multiple readings",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Pages with 2 entries",
        "Pages with entries",
        "ja:Baseball"
      ],
      "glosses": [
        "abbreviation of メジャーリーグベースボール (“Major League Baseball”)"
      ],
      "links": [
        [
          "baseball",
          "baseball"
        ],
        [
          "メジャーリーグベースボール",
          "メジャーリーグベースボール#Japanese"
        ]
      ],
      "raw_glosses": [
        "(baseball) abbreviation of メジャーリーグベースボール (“Major League Baseball”)"
      ],
      "synonyms": [
        {
          "word": "メジャーリーグ"
        },
        {
          "word": "大リーグ"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
      "topics": [
        "ball-games",
        "baseball",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[e̞mɯ̟e̞ɾɯ̟bʲiː]"
    }
  ],
  "word": "MLB"
}