"-us" meaning in Polish

{
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "id": "nominal",
        "rfe": "Masurized form of '-usz', or back-formation from '-uch'?"
      },
      "expansion": "(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “Masurized form of '-usz', or back-formation from '-uch'?”)",
      "name": "ety"
    }
  ],
  "etymology_text": "(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “Masurized form of '-usz', or back-formation from '-uch'?”)",
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "-us m ? (noun-forming suffix)",
      "name": "pl-noun"
    }
  ],
  "hyphenation": [
    "-us"
  ],
  "hyphenations": [
    {
      "parts": [
        "",
        "us"
      ]
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "Polish entries with etymon",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "52 48",
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "sługa + -us → sługus",
          "type": "example"
        }
      ],
      "glosses": [
        "derogatory suffix"
      ],
      "id": "en--us-pl-suffix-Zy31Yzth",
      "tags": [
        "masculine",
        "morpheme"
      ]
    },
    {
      "categories": [
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "Polish entries with etymon",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "52 48",
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "Kraków + -us → krakus",
          "type": "example"
        }
      ],
      "glosses": [
        "demonym suffix"
      ],
      "id": "en--us-pl-suffix-Afj3wMy8",
      "tags": [
        "masculine",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/us/"
    },
    {
      "rhymes": "-us"
    }
  ],
  "word": "-us"
}

{
  "categories": [
    "Pages using catfix",
    "Pages with 18 entries",
    "Pages with entries",
    "Pages with etymon",
    "Polish 1-syllable words",
    "Polish entries with etymon",
    "Polish entries with incorrect language header",
    "Polish lemmas",
    "Polish masculine suffixes",
    "Polish noun-forming suffixes",
    "Polish suffixes",
    "Polish terms with IPA pronunciation",
    "Polish terms with audio pronunciation",
    "Requests for etymologies in Polish entries",
    "Requests for gender in Polish entries",
    "Rhymes:Polish/us",
    "Rhymes:Polish/us/1 syllable"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "id": "nominal",
        "rfe": "Masurized form of '-usz', or back-formation from '-uch'?"
      },
      "expansion": "(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “Masurized form of '-usz', or back-formation from '-uch'?”)",
      "name": "ety"
    }
  ],
  "etymology_text": "(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “Masurized form of '-usz', or back-formation from '-uch'?”)",
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "-us m ? (noun-forming suffix)",
      "name": "pl-noun"
    }
  ],
  "hyphenation": [
    "-us"
  ],
  "hyphenations": [
    {
      "parts": [
        "",
        "us"
      ]
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "suffix",
  "senses": [
    {
      "examples": [
        {
          "text": "sługa + -us → sługus",
          "type": "example"
        }
      ],
      "glosses": [
        "derogatory suffix"
      ],
      "tags": [
        "masculine",
        "morpheme"
      ]
    },
    {
      "examples": [
        {
          "text": "Kraków + -us → krakus",
          "type": "example"
        }
      ],
      "glosses": [
        "demonym suffix"
      ],
      "tags": [
        "masculine",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/us/"
    },
    {
      "rhymes": "-us"
    }
  ],
  "word": "-us"
}

{
  "called_from": "form_descriptions/1698",
  "msg": "unrecognized head form: noun-forming suffix",
  "path": [
    "-us"
  ],
  "section": "Polish",
  "subsection": "suffix",
  "title": "-us",
  "trace": ""
}