"craic killer" meaning in English

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        "3": "craic"
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      "expansion": "Irish craic",
      "name": "bor"
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      "args": {
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        "2": "en",
        "3": "crack"
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      "expansion": "English crack",
      "name": "der"
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    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "crak",
        "t": "loud conversation, bragging talk"
      },
      "expansion": "Middle English crak (“loud conversation, bragging talk”)",
      "name": "der"
    }
  ],
  "etymology_text": "Borrowed from Irish craic, itself borrowed from Northern English crack, inherited from Middle English crak (“loud conversation, bragging talk”).",
  "forms": [
    {
      "form": "craic killers",
      "tags": [
        "plural"
      ]
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      "expansion": "craic killer (plural craic killers)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "People",
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            "All topics",
            "Fundamental"
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        }
      ],
      "glosses": [
        "Something or someone that spoils an otherwise enjoyable event."
      ],
      "id": "en-craic_killer-en-noun-WjcCJe-l",
      "raw_glosses": [
        "(Ireland, Northern England) Something or someone that spoils an otherwise enjoyable event."
      ],
      "synonyms": [
        {
          "sense": "something or someone who spoils an enjoyable event",
          "word": "dampener"
        },
        {
          "word": "buzzkill"
        },
        {
          "word": "killjoy"
        },
        {
          "word": "wet blanket"
        },
        {
          "tags": [
            "person"
          ],
          "word": "party-pooper"
        },
        {
          "word": "spoilsport"
        }
      ],
      "tags": [
        "Ireland",
        "Northern-England"
      ]
    }
  ],
  "word": "craic killer"
}

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      "name": "bor"
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      "args": {
        "1": "en",
        "2": "en",
        "3": "crack"
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      "expansion": "English crack",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "crak",
        "t": "loud conversation, bragging talk"
      },
      "expansion": "Middle English crak (“loud conversation, bragging talk”)",
      "name": "der"
    }
  ],
  "etymology_text": "Borrowed from Irish craic, itself borrowed from Northern English crack, inherited from Middle English crak (“loud conversation, bragging talk”).",
  "forms": [
    {
      "form": "craic killers",
      "tags": [
        "plural"
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      "expansion": "craic killer (plural craic killers)",
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  "lang_code": "en",
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      "glosses": [
        "Something or someone that spoils an otherwise enjoyable event."
      ],
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        "(Ireland, Northern England) Something or someone that spoils an otherwise enjoyable event."
      ],
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        "Ireland",
        "Northern-England"
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  "synonyms": [
    {
      "sense": "something or someone who spoils an enjoyable event",
      "word": "dampener"
    },
    {
      "word": "buzzkill"
    },
    {
      "word": "killjoy"
    },
    {
      "word": "wet blanket"
    },
    {
      "tags": [
        "person"
      ],
      "word": "party-pooper"
    },
    {
      "word": "spoilsport"
    }
  ],
  "word": "craic killer"
}