"prima aprilis" meaning in Polish

{
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": "la",
        "3": "prīma Aprīlis"
      },
      "expansion": "Unadapted borrowing from Latin prīma Aprīlis",
      "name": "ubor"
    }
  ],
  "etymology_text": "Unadapted borrowing from Latin prīma Aprīlis.",
  "forms": [
    {
      "form": "primaaprilisowy",
      "tags": [
        "adjective"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m-in",
        "adj": "primaaprilisowy",
        "head": "prima aprilis",
        "indecl": "1"
      },
      "expansion": "prima aprilis m inan (indeclinable, related adjective primaaprilisowy)",
      "name": "pl-noun"
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "53 47",
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "56 44",
          "kind": "topical",
          "langcode": "pl",
          "name": "Comedy",
          "orig": "pl:Comedy",
          "parents": [
            "Drama",
            "Theater",
            "Art",
            "Entertainment",
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "52 48",
          "kind": "topical",
          "langcode": "pl",
          "name": "Observances",
          "orig": "pl:Observances",
          "parents": [
            "Calendar",
            "Timekeeping",
            "Time",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "April Fools' Day, All Fools' Day (the first day in April, when tricks and practical jokes are traditionally played)"
      ],
      "id": "en-prima_aprilis-pl-noun-gEgjViR~",
      "links": [
        [
          "April Fools' Day",
          "April Fools' Day"
        ],
        [
          "All Fools' Day",
          "All Fools' Day"
        ]
      ],
      "tags": [
        "inanimate",
        "indeclinable",
        "masculine"
      ]
    },
    {
      "categories": [
        {
          "_dis": "53 47",
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "52 48",
          "kind": "topical",
          "langcode": "pl",
          "name": "Observances",
          "orig": "pl:Observances",
          "parents": [
            "Calendar",
            "Timekeeping",
            "Time",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "joke made to someone on April Fools' Day"
      ],
      "id": "en-prima_aprilis-pl-noun-bGYNdhm7",
      "links": [
        [
          "joke",
          "joke"
        ],
        [
          "April Fools' Day",
          "April Fools' Day"
        ]
      ],
      "tags": [
        "inanimate",
        "indeclinable",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpri.ma apˈri.lis/"
    },
    {
      "ipa": "/ˈprɨ.ma apˈrɨ.lis/"
    },
    {
      "rhymes": "-ilis"
    }
  ],
  "word": "prima aprilis"
}

{
  "categories": [
    "Polish entries with incorrect language header",
    "Polish inanimate nouns",
    "Polish indeclinable nouns",
    "Polish lemmas",
    "Polish masculine nouns",
    "Polish multiword terms",
    "Polish nouns",
    "Polish terms borrowed from Latin",
    "Polish terms derived from Latin",
    "Polish terms with IPA pronunciation",
    "Polish terms with audio links",
    "Polish unadapted borrowings from Latin",
    "Rhymes:Polish/ilis",
    "pl:Comedy",
    "pl:Observances"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": "la",
        "3": "prīma Aprīlis"
      },
      "expansion": "Unadapted borrowing from Latin prīma Aprīlis",
      "name": "ubor"
    }
  ],
  "etymology_text": "Unadapted borrowing from Latin prīma Aprīlis.",
  "forms": [
    {
      "form": "primaaprilisowy",
      "tags": [
        "adjective"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m-in",
        "adj": "primaaprilisowy",
        "head": "prima aprilis",
        "indecl": "1"
      },
      "expansion": "prima aprilis m inan (indeclinable, related adjective primaaprilisowy)",
      "name": "pl-noun"
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "April Fools' Day, All Fools' Day (the first day in April, when tricks and practical jokes are traditionally played)"
      ],
      "links": [
        [
          "April Fools' Day",
          "April Fools' Day"
        ],
        [
          "All Fools' Day",
          "All Fools' Day"
        ]
      ],
      "tags": [
        "inanimate",
        "indeclinable",
        "masculine"
      ]
    },
    {
      "glosses": [
        "joke made to someone on April Fools' Day"
      ],
      "links": [
        [
          "joke",
          "joke"
        ],
        [
          "April Fools' Day",
          "April Fools' Day"
        ]
      ],
      "tags": [
        "inanimate",
        "indeclinable",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpri.ma apˈri.lis/"
    },
    {
      "ipa": "/ˈprɨ.ma apˈrɨ.lis/"
    },
    {
      "rhymes": "-ilis"
    }
  ],
  "word": "prima aprilis"
}