"-us" meaning in Old Irish

{
  "etymology_number": "1",
  "etymology_templates": [
    {
      "args": {
        "1": "sga",
        "2": "cel-pro",
        "3": "*-es-tus"
      },
      "expansion": "Proto-Celtic *-es-tus",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Celtic *-es-tus.",
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix"
      },
      "expansion": "-us",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "senses": [
    {
      "alt_of": [
        {
          "word": "-as"
        }
      ],
      "glosses": [
        "alternative form of -as"
      ],
      "id": "en--us-sga-suffix--u256Vgw",
      "links": [
        [
          "-as",
          "-as#Old_Irish"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/us/"
    }
  ],
  "word": "-us"
}

{
  "etymology_number": "2",
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix",
        "3": "suffixed pronoun",
        "cat2": "personal pronouns"
      },
      "expansion": "-us (suffixed pronoun)",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "related": [
    {
      "_dis1": "0 0",
      "word": "but they are never the first prefix in a verbal complex"
    },
    {
      "_dis1": "0 0",
      "word": "m-L"
    },
    {
      "_dis1": "0 0",
      "word": "dom-L"
    },
    {
      "_dis1": "0 0",
      "word": "dam-L"
    },
    {
      "_dis1": "0 0",
      "word": "-um"
    },
    {
      "_dis1": "0 0",
      "word": "t-L"
    },
    {
      "_dis1": "0 0",
      "word": "dot-L"
    },
    {
      "_dis1": "0 0",
      "word": "dat-L"
    },
    {
      "_dis1": "0 0",
      "word": "dut-L"
    },
    {
      "_dis1": "0 0",
      "word": "dit-L"
    },
    {
      "_dis1": "0 0",
      "word": "-ut"
    },
    {
      "_dis1": "0 0",
      "word": "a-N"
    },
    {
      "_dis1": "0 0",
      "word": "e-N"
    },
    {
      "_dis1": "0 0",
      "word": "d-N"
    },
    {
      "_dis1": "0 0",
      "word": "id-N"
    },
    {
      "_dis1": "0 0",
      "word": "did-N"
    },
    {
      "_dis1": "0 0",
      "word": "-i"
    },
    {
      "_dis1": "0 0",
      "word": "-it"
    },
    {
      "_dis1": "0 0",
      "word": "s-(N)"
    },
    {
      "_dis1": "0 0",
      "word": "da-"
    },
    {
      "_dis1": "0 0",
      "word": "a-L"
    },
    {
      "_dis1": "0 0",
      "word": "e-L"
    },
    {
      "_dis1": "0 0",
      "word": "d-L"
    },
    {
      "_dis1": "0 0",
      "word": "id-L"
    },
    {
      "_dis1": "0 0",
      "word": "did-L"
    },
    {
      "_dis1": "0 0",
      "word": "n-"
    },
    {
      "_dis1": "0 0",
      "word": "don-"
    },
    {
      "_dis1": "0 0",
      "word": "dun-"
    },
    {
      "_dis1": "0 0",
      "word": "dan-"
    },
    {
      "_dis1": "0 0",
      "word": "-unn"
    },
    {
      "_dis1": "0 0",
      "word": "b-"
    },
    {
      "_dis1": "0 0",
      "word": "dob-"
    },
    {
      "_dis1": "0 0",
      "word": "dub-"
    },
    {
      "_dis1": "0 0",
      "word": "dab-"
    },
    {
      "_dis1": "0 0",
      "word": "-uib"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "_dis": "0 100 0",
          "kind": "other",
          "name": "Old Irish entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "0 100 0",
          "kind": "other",
          "name": "Old Irish personal pronouns",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "her (object pronoun), it (in reference to a feminine noun)"
      ],
      "id": "en--us-sga-suffix-xE1WmAsS",
      "links": [
        [
          "her",
          "her"
        ],
        [
          "it",
          "it"
        ]
      ],
      "tags": [
        "morpheme",
        "pronoun",
        "suffix"
      ]
    },
    {
      "glosses": [
        "them"
      ],
      "id": "en--us-sga-suffix-yajcM2lk",
      "links": [
        [
          "them",
          "them"
        ]
      ],
      "tags": [
        "morpheme",
        "pronoun",
        "suffix"
      ]
    }
  ],
  "word": "-us"
}

{
  "categories": [
    "Old Irish entries with incorrect language header",
    "Old Irish lemmas",
    "Old Irish personal pronouns",
    "Old Irish suffixes",
    "Old Irish terms derived from Proto-Celtic",
    "Old Irish terms inherited from Proto-Celtic",
    "Pages using catfix",
    "Pages with 18 entries",
    "Pages with entries"
  ],
  "etymology_number": "1",
  "etymology_templates": [
    {
      "args": {
        "1": "sga",
        "2": "cel-pro",
        "3": "*-es-tus"
      },
      "expansion": "Proto-Celtic *-es-tus",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Celtic *-es-tus.",
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix"
      },
      "expansion": "-us",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "senses": [
    {
      "alt_of": [
        {
          "word": "-as"
        }
      ],
      "glosses": [
        "alternative form of -as"
      ],
      "links": [
        [
          "-as",
          "-as#Old_Irish"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/us/"
    }
  ],
  "word": "-us"
}

{
  "categories": [
    "Old Irish entries with incorrect language header",
    "Old Irish lemmas",
    "Old Irish personal pronouns",
    "Old Irish suffixes",
    "Pages using catfix",
    "Pages with 18 entries",
    "Pages with entries"
  ],
  "etymology_number": "2",
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix",
        "3": "suffixed pronoun",
        "cat2": "personal pronouns"
      },
      "expansion": "-us (suffixed pronoun)",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "related": [
    {
      "word": "but they are never the first prefix in a verbal complex"
    },
    {
      "word": "m-L"
    },
    {
      "word": "dom-L"
    },
    {
      "word": "dam-L"
    },
    {
      "word": "-um"
    },
    {
      "word": "t-L"
    },
    {
      "word": "dot-L"
    },
    {
      "word": "dat-L"
    },
    {
      "word": "dut-L"
    },
    {
      "word": "dit-L"
    },
    {
      "word": "-ut"
    },
    {
      "word": "a-N"
    },
    {
      "word": "e-N"
    },
    {
      "word": "d-N"
    },
    {
      "word": "id-N"
    },
    {
      "word": "did-N"
    },
    {
      "word": "-i"
    },
    {
      "word": "-it"
    },
    {
      "word": "s-(N)"
    },
    {
      "word": "da-"
    },
    {
      "word": "a-L"
    },
    {
      "word": "e-L"
    },
    {
      "word": "d-L"
    },
    {
      "word": "id-L"
    },
    {
      "word": "did-L"
    },
    {
      "word": "n-"
    },
    {
      "word": "don-"
    },
    {
      "word": "dun-"
    },
    {
      "word": "dan-"
    },
    {
      "word": "-unn"
    },
    {
      "word": "b-"
    },
    {
      "word": "dob-"
    },
    {
      "word": "dub-"
    },
    {
      "word": "dab-"
    },
    {
      "word": "-uib"
    }
  ],
  "senses": [
    {
      "glosses": [
        "her (object pronoun), it (in reference to a feminine noun)"
      ],
      "links": [
        [
          "her",
          "her"
        ],
        [
          "it",
          "it"
        ]
      ],
      "tags": [
        "morpheme",
        "pronoun",
        "suffix"
      ]
    },
    {
      "glosses": [
        "them"
      ],
      "links": [
        [
          "them",
          "them"
        ]
      ],
      "tags": [
        "morpheme",
        "pronoun",
        "suffix"
      ]
    }
  ],
  "word": "-us"
}