"bday" meaning in English

{
  "forms": [
    {
      "form": "bdays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bday (plural bdays)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "birthday"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Happy bday!",
          "type": "example"
        },
        {
          "ref": "2008, Lorene Scafaria, Nick and Norah's Infinite Playlist, spoken by Nick (Michael Cera):",
          "text": "I think last time we spoke we both kind of said some really nasty things that neither of us meant, like… you broke up with me… on my b-day.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Abbreviation of birthday."
      ],
      "id": "en-bday-en-noun-vsxCzL9j",
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "text messaging",
          "text messaging"
        ],
        [
          "birthday",
          "birthday#English"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, text messaging) Abbreviation of birthday."
      ],
      "synonyms": [
        {
          "word": "b-day"
        },
        {
          "word": "B-day"
        }
      ],
      "tags": [
        "Internet",
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈbiːdeɪ/"
    },
    {
      "rhymes": "-iːdeɪ"
    },
    {
      "homophone": "bidet stripped-by-parse_pron_post_template_fn"
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-bday.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/28/LL-Q1860_%28eng%29-Vealhurl-bday.wav/LL-Q1860_%28eng%29-Vealhurl-bday.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/28/LL-Q1860_%28eng%29-Vealhurl-bday.wav/LL-Q1860_%28eng%29-Vealhurl-bday.wav.ogg"
    }
  ],
  "word": "bday"
}

{
  "forms": [
    {
      "form": "bdays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bday (plural bdays)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "birthday"
        }
      ],
      "categories": [
        "English abbreviations",
        "English countable nouns",
        "English entries with incorrect language header",
        "English internet slang",
        "English lemmas",
        "English nouns",
        "English terms with homophones",
        "English terms with quotations",
        "English terms with usage examples",
        "English text messaging slang",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:English/iːdeɪ",
        "Rhymes:English/iːdeɪ/2 syllables"
      ],
      "examples": [
        {
          "text": "Happy bday!",
          "type": "example"
        },
        {
          "ref": "2008, Lorene Scafaria, Nick and Norah's Infinite Playlist, spoken by Nick (Michael Cera):",
          "text": "I think last time we spoke we both kind of said some really nasty things that neither of us meant, like… you broke up with me… on my b-day.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Abbreviation of birthday."
      ],
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "text messaging",
          "text messaging"
        ],
        [
          "birthday",
          "birthday#English"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, text messaging) Abbreviation of birthday."
      ],
      "tags": [
        "Internet",
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈbiːdeɪ/"
    },
    {
      "rhymes": "-iːdeɪ"
    },
    {
      "homophone": "bidet stripped-by-parse_pron_post_template_fn"
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-bday.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/28/LL-Q1860_%28eng%29-Vealhurl-bday.wav/LL-Q1860_%28eng%29-Vealhurl-bday.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/2/28/LL-Q1860_%28eng%29-Vealhurl-bday.wav/LL-Q1860_%28eng%29-Vealhurl-bday.wav.ogg"
    }
  ],
  "synonyms": [
    {
      "word": "b-day"
    },
    {
      "word": "B-day"
    }
  ],
  "word": "bday"
}