"jam session" meaning in Polish

{
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": "en",
        "3": "jam session"
      },
      "expansion": "Unadapted borrowing from English jam session",
      "name": "ubor"
    }
  ],
  "etymology_text": "Unadapted borrowing from English jam session.",
  "head_templates": [
    {
      "args": {
        "1": "n",
        "head": "jam session",
        "indecl": "yes"
      },
      "expansion": "jam session n (indeclinable)",
      "name": "pl-noun"
    }
  ],
  "hyphenation": [
    "[please"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with Template:pl-pr without syllabification",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "pl",
          "name": "Music",
          "orig": "pl:Music",
          "parents": [
            "Art",
            "Sound",
            "Culture",
            "Energy",
            "Society",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "jam session"
      ],
      "id": "en-jam_session-pl-noun-18tSzn9I",
      "links": [
        [
          "music",
          "music"
        ],
        [
          "jam session",
          "jam session#English"
        ]
      ],
      "raw_glosses": [
        "(music) jam session"
      ],
      "tags": [
        "indeclinable",
        "neuter"
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/d͡ʐɛmˈsɛ.ʂɘn/"
    },
    {
      "rhymes": "-ɛʂɘn"
    }
  ],
  "word": "jam session"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": "en",
        "3": "jam session"
      },
      "expansion": "Unadapted borrowing from English jam session",
      "name": "ubor"
    }
  ],
  "etymology_text": "Unadapted borrowing from English jam session.",
  "head_templates": [
    {
      "args": {
        "1": "n",
        "head": "jam session",
        "indecl": "yes"
      },
      "expansion": "jam session n (indeclinable)",
      "name": "pl-noun"
    }
  ],
  "hyphenation": [
    "[please"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 4 entries",
        "Pages with entries",
        "Polish 3-syllable words",
        "Polish entries with Template:pl-pr without syllabification",
        "Polish entries with incorrect language header",
        "Polish indeclinable nouns",
        "Polish lemmas",
        "Polish multiword terms",
        "Polish neuter nouns",
        "Polish nouns",
        "Polish terms borrowed from English",
        "Polish terms derived from English",
        "Polish terms with IPA pronunciation",
        "Polish terms with audio pronunciation",
        "Polish unadapted borrowings from English",
        "Rhymes:Polish/ɛʂɘn",
        "Rhymes:Polish/ɛʂɘn/3 syllables",
        "pl:Music"
      ],
      "glosses": [
        "jam session"
      ],
      "links": [
        [
          "music",
          "music"
        ],
        [
          "jam session",
          "jam session#English"
        ]
      ],
      "raw_glosses": [
        "(music) jam session"
      ],
      "tags": [
        "indeclinable",
        "neuter"
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/d͡ʐɛmˈsɛ.ʂɘn/"
    },
    {
      "rhymes": "-ɛʂɘn"
    }
  ],
  "word": "jam session"
}