"-san" meaning in Irish

{
  "etymology_templates": [
    {
      "args": {
        "1": "ga",
        "2": "sga",
        "3": "-som",
        "pos": "3rd person singular masculine/neuter; 3rd person plural"
      },
      "expansion": "Old Irish -som (3rd person singular masculine/neuter; 3rd person plural)",
      "name": "der"
    }
  ],
  "etymology_text": "From Old Irish -som (3rd person singular masculine/neuter; 3rd person plural).",
  "forms": [
    {
      "form": "-sean",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "suffix",
        "cat2": "emphatic suffixes",
        "cat3": "",
        "g": "",
        "g2": ""
      },
      "expansion": "-san",
      "name": "head"
    },
    {
      "args": {
        "1": "e"
      },
      "expansion": "-san",
      "name": "ga-suffix"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "suffix",
  "related": [
    {
      "_dis1": "50 50",
      "word": "-sa"
    },
    {
      "_dis1": "50 50",
      "word": "-se"
    },
    {
      "_dis1": "50 50",
      "word": "-sean"
    },
    {
      "_dis1": "50 50",
      "word": "-na"
    },
    {
      "_dis1": "50 50",
      "english": "after nn in pronouns",
      "word": "-ne-e"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages with 5 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "emphatic suffix of the following persons; used after velarized consonants and back vowels",
        "third-person singular masculine"
      ],
      "id": "en--san-ga-suffix-cKqekv0A",
      "tags": [
        "masculine",
        "morpheme",
        "singular",
        "third-person"
      ]
    },
    {
      "categories": [
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages with 5 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 50",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "emphatic suffix of the following persons; used after velarized consonants and back vowels",
        "third-person plural"
      ],
      "id": "en--san-ga-suffix-wMeVRZZg",
      "tags": [
        "morpheme",
        "plural",
        "third-person"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sˠən̪ˠ/"
    },
    {
      "ipa": "/sˠənˠ/"
    }
  ],
  "word": "-san"
}

{
  "categories": [
    "Irish emphatic suffixes",
    "Irish entries with incorrect language header",
    "Irish lemmas",
    "Irish suffixes",
    "Irish terms derived from Old Irish",
    "Pages using catfix",
    "Pages with 5 entries",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "ga",
        "2": "sga",
        "3": "-som",
        "pos": "3rd person singular masculine/neuter; 3rd person plural"
      },
      "expansion": "Old Irish -som (3rd person singular masculine/neuter; 3rd person plural)",
      "name": "der"
    }
  ],
  "etymology_text": "From Old Irish -som (3rd person singular masculine/neuter; 3rd person plural).",
  "forms": [
    {
      "form": "-sean",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "suffix",
        "cat2": "emphatic suffixes",
        "cat3": "",
        "g": "",
        "g2": ""
      },
      "expansion": "-san",
      "name": "head"
    },
    {
      "args": {
        "1": "e"
      },
      "expansion": "-san",
      "name": "ga-suffix"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "suffix",
  "related": [
    {
      "word": "-sa"
    },
    {
      "word": "-se"
    },
    {
      "word": "-sean"
    },
    {
      "word": "-na"
    },
    {
      "english": "after nn in pronouns",
      "word": "-ne-e"
    }
  ],
  "senses": [
    {
      "glosses": [
        "emphatic suffix of the following persons; used after velarized consonants and back vowels",
        "third-person singular masculine"
      ],
      "tags": [
        "masculine",
        "morpheme",
        "singular",
        "third-person"
      ]
    },
    {
      "glosses": [
        "emphatic suffix of the following persons; used after velarized consonants and back vowels",
        "third-person plural"
      ],
      "tags": [
        "morpheme",
        "plural",
        "third-person"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sˠən̪ˠ/"
    },
    {
      "ipa": "/sˠənˠ/"
    }
  ],
  "word": "-san"
}