"-un" meaning in Polish

{
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": "inh",
        "3": "sla-pro>*-unъ>nominal",
        "id": "nominal",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Slavic *-unъ\nPolish -un",
      "name": "etymon"
    },
    {
      "args": {
        "1": "Inherited"
      },
      "expansion": "Inherited",
      "name": "glossary"
    },
    {
      "args": {
        "1": "pl",
        "2": "sla-pro",
        "3": "*-unъ",
        "4": "",
        "5": "",
        "g": "",
        "g2": "",
        "g3": "",
        "id": "",
        "lit": "",
        "nocat": "",
        "pos": "",
        "sc": "",
        "sort": "",
        "tr": "",
        "ts": ""
      },
      "expansion": "Proto-Slavic *-unъ",
      "name": "inh"
    },
    {
      "args": {
        "1": "pl",
        "2": "sla-pro",
        "3": "*-unъ"
      },
      "expansion": "Inherited from Proto-Slavic *-unъ",
      "name": "inh+"
    }
  ],
  "etymology_text": "Etymology tree\nProto-Slavic *-unъ\nPolish -un\nInherited from Proto-Slavic *-unъ.",
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "suffix",
        "g": "m"
      },
      "expansion": "-un m",
      "name": "head"
    }
  ],
  "hyphenation": [
    "[please"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries referencing etymons with invalid IDs",
          "parents": [
            "Entries referencing etymons with invalid IDs",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with Template:pl-pr without syllabification",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with etymology trees",
          "parents": [
            "Entries with etymology trees",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "_dis": "12 15 18 14 15 15 5 5",
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "12 15 17 13 14 14 7 8",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "bieg + -un → biegun",
          "type": "example"
        }
      ],
      "glosses": [
        "forms masculine nouns"
      ],
      "id": "en--un-pl-suffix-kYZee8-0",
      "tags": [
        "masculine",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/un/"
    },
    {
      "rhymes": "-un"
    }
  ],
  "word": "-un"
}

{
  "categories": [
    "Pages with 7 entries",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": "inh",
        "3": "sla-pro>*-unъ>nominal",
        "id": "nominal",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Slavic *-unъ\nPolish -un",
      "name": "etymon"
    },
    {
      "args": {
        "1": "Inherited"
      },
      "expansion": "Inherited",
      "name": "glossary"
    },
    {
      "args": {
        "1": "pl",
        "2": "sla-pro",
        "3": "*-unъ",
        "4": "",
        "5": "",
        "g": "",
        "g2": "",
        "g3": "",
        "id": "",
        "lit": "",
        "nocat": "",
        "pos": "",
        "sc": "",
        "sort": "",
        "tr": "",
        "ts": ""
      },
      "expansion": "Proto-Slavic *-unъ",
      "name": "inh"
    },
    {
      "args": {
        "1": "pl",
        "2": "sla-pro",
        "3": "*-unъ"
      },
      "expansion": "Inherited from Proto-Slavic *-unъ",
      "name": "inh+"
    }
  ],
  "etymology_text": "Etymology tree\nProto-Slavic *-unъ\nPolish -un\nInherited from Proto-Slavic *-unъ.",
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "suffix",
        "g": "m"
      },
      "expansion": "-un m",
      "name": "head"
    }
  ],
  "hyphenation": [
    "[please"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Pages using catfix",
        "Pages with 7 entries",
        "Pages with entries",
        "Polish 1-syllable words",
        "Polish entries referencing etymons with invalid IDs",
        "Polish entries with Template:pl-pr without syllabification",
        "Polish entries with etymology trees",
        "Polish entries with incorrect language header",
        "Polish lemmas",
        "Polish masculine suffixes",
        "Polish suffixes",
        "Polish terms derived from Proto-Slavic",
        "Polish terms inherited from Proto-Slavic",
        "Polish terms with IPA pronunciation",
        "Rhymes:Polish/un",
        "Rhymes:Polish/un/1 syllable"
      ],
      "examples": [
        {
          "text": "bieg + -un → biegun",
          "type": "example"
        }
      ],
      "glosses": [
        "forms masculine nouns"
      ],
      "tags": [
        "masculine",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/un/"
    },
    {
      "rhymes": "-un"
    }
  ],
  "word": "-un"
}