"-ach" meaning in Scottish Gaelic

{
  "etymology_templates": [
    {
      "args": {
        "1": "gd",
        "2": "sga",
        "3": "-ach"
      },
      "expansion": "Old Irish -ach",
      "name": "inh"
    },
    {
      "args": {
        "1": "gd",
        "2": "cel-pro",
        "3": "*-ākos"
      },
      "expansion": "Proto-Celtic *-ākos",
      "name": "inh"
    },
    {
      "args": {
        "1": "gd",
        "2": "ine-pro",
        "3": "*-eh₂kos, *-eh₂ḱos"
      },
      "expansion": "Proto-Indo-European *-eh₂kos, *-eh₂ḱos",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "-og"
      },
      "expansion": "Welsh -og",
      "name": "cog"
    },
    {
      "args": {
        "1": "gd",
        "2": "-ag"
      },
      "expansion": "Doublet of -ag",
      "name": "doublet"
    }
  ],
  "etymology_text": "From Old Irish -ach, from Proto-Celtic *-ākos, from Proto-Indo-European *-eh₂kos, *-eh₂ḱos, from a-stem suffix *-eh₂- + adjectival suffix *-kos, *-ḱos; compare Welsh -og. Doublet of -ag.",
  "forms": [
    {
      "form": "-aich",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "-aichean",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "gd",
        "2": "suffix",
        "3": "plural",
        "4": "-aich",
        "5": "or",
        "6": "-aichean"
      },
      "expansion": "-ach (plural -aich or -aichean)",
      "name": "head"
    }
  ],
  "lang": "Scottish Gaelic",
  "lang_code": "gd",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Scottish Gaelic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "_dis": "17 2 1 3 4 2 21 4 2 27 1 3 14",
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "16 1 1 2 5 1 20 5 1 25 1 2 20",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Forming nouns from nouns and adjectives with the sense of ‘person or thing connected or involved with, belonging to, having’."
      ],
      "id": "en--ach-gd-suffix-6zN9VXaw",
      "synonyms": [
        {
          "english": "slender form",
          "word": "-each"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ax]"
    }
  ],
  "word": "-ach"
}

{
  "categories": [
    "Pages with 7 entries",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "gd",
        "2": "sga",
        "3": "-ach"
      },
      "expansion": "Old Irish -ach",
      "name": "inh"
    },
    {
      "args": {
        "1": "gd",
        "2": "cel-pro",
        "3": "*-ākos"
      },
      "expansion": "Proto-Celtic *-ākos",
      "name": "inh"
    },
    {
      "args": {
        "1": "gd",
        "2": "ine-pro",
        "3": "*-eh₂kos, *-eh₂ḱos"
      },
      "expansion": "Proto-Indo-European *-eh₂kos, *-eh₂ḱos",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "-og"
      },
      "expansion": "Welsh -og",
      "name": "cog"
    },
    {
      "args": {
        "1": "gd",
        "2": "-ag"
      },
      "expansion": "Doublet of -ag",
      "name": "doublet"
    }
  ],
  "etymology_text": "From Old Irish -ach, from Proto-Celtic *-ākos, from Proto-Indo-European *-eh₂kos, *-eh₂ḱos, from a-stem suffix *-eh₂- + adjectival suffix *-kos, *-ḱos; compare Welsh -og. Doublet of -ag.",
  "forms": [
    {
      "form": "-aich",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "-aichean",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "gd",
        "2": "suffix",
        "3": "plural",
        "4": "-aich",
        "5": "or",
        "6": "-aichean"
      },
      "expansion": "-ach (plural -aich or -aichean)",
      "name": "head"
    }
  ],
  "lang": "Scottish Gaelic",
  "lang_code": "gd",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Pages with 7 entries",
        "Pages with entries",
        "Scottish Gaelic doublets",
        "Scottish Gaelic entries with incorrect language header",
        "Scottish Gaelic lemmas",
        "Scottish Gaelic suffixes",
        "Scottish Gaelic terms derived from Old Irish",
        "Scottish Gaelic terms derived from Proto-Celtic",
        "Scottish Gaelic terms derived from Proto-Indo-European",
        "Scottish Gaelic terms inherited from Old Irish",
        "Scottish Gaelic terms inherited from Proto-Celtic",
        "Scottish Gaelic terms inherited from Proto-Indo-European"
      ],
      "glosses": [
        "Forming nouns from nouns and adjectives with the sense of ‘person or thing connected or involved with, belonging to, having’."
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ax]"
    }
  ],
  "synonyms": [
    {
      "english": "slender form",
      "word": "-each"
    }
  ],
  "word": "-ach"
}