"oi!" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Musical genres",
          "orig": "en:Musical genres",
          "parents": [
            "Genres",
            "Music",
            "Entertainment",
            "Art",
            "Sound",
            "Culture",
            "Energy",
            "Society",
            "Nature",
            "All topics",
            "Fundamental"
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        "Synonym of oi (a genre of British punk rock)"
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      "synonyms": [
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          "word": "oi"
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  "word": "oi!"
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      "expansion": "oi! (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "word": "oi"
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  "word": "oi!"
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