"Fat Tuesday" meaning in English

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      "name": "en-proper noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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          "langcode": "en",
          "name": "Calendar",
          "orig": "en:Calendar",
          "parents": [
            "Timekeeping",
            "Time",
            "All topics",
            "Fundamental"
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          "name": "Christianity",
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            "Culture",
            "Society",
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      ],
      "glosses": [
        "The Tuesday before the onset of Lent."
      ],
      "id": "en-Fat_Tuesday-en-name-Ubly2b3r",
      "links": [
        [
          "Christianity",
          "Christianity"
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        [
          "Lent",
          "Lent"
        ]
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      "raw_glosses": [
        "(Christianity) The Tuesday before the onset of Lent."
      ],
      "synonyms": [
        {
          "word": "Mardi Gras"
        },
        {
          "word": "Shrove Tuesday"
        }
      ],
      "topics": [
        "Christianity"
      ]
    }
  ],
  "word": "Fat Tuesday"
}

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  "lang_code": "en",
  "pos": "name",
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        "The Tuesday before the onset of Lent."
      ],
      "links": [
        [
          "Christianity",
          "Christianity"
        ],
        [
          "Lent",
          "Lent"
        ]
      ],
      "raw_glosses": [
        "(Christianity) The Tuesday before the onset of Lent."
      ],
      "topics": [
        "Christianity"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Mardi Gras"
    },
    {
      "word": "Shrove Tuesday"
    }
  ],
  "word": "Fat Tuesday"
}