"-oi" meaning in Proto-Finnic

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "fi",
            "2": "-o"
          },
          "expansion": "Finnish: -o",
          "name": "desc"
        },
        {
          "args": {
            "1": "merged with <i class=\"Latn mention\" lang=\"urj-fin-pro\">*-o</i>"
          },
          "expansion": "(merged with *-o)",
          "name": "q"
        }
      ],
      "text": "Finnish: -o (merged with *-o)"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "izh",
            "2": "-o",
            "id": "denominal"
          },
          "expansion": "Ingrian: -o",
          "name": "desc"
        }
      ],
      "text": "Ingrian: -o"
    }
  ],
  "etymology_text": "Originally an allophonic form of *-i attached to *-a- stems, incurring regular labialization (*-ai > *-oi) in later syllables.",
  "head_templates": [
    {
      "args": {
        "1": "urj-fin-pro",
        "2": "suffix",
        "cat2": "noun-forming suffixes"
      },
      "expansion": "*-oi",
      "name": "head"
    }
  ],
  "lang": "Proto-Finnic",
  "lang_code": "urj-fin-pro",
  "original_title": "Reconstruction:Proto-Finnic/-oi",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Proto-Finnic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Forms mainly diminutive nouns from nominal stems."
      ],
      "id": "en--oi-urj-fin-pro-suffix-w6NUWoPl",
      "tags": [
        "morpheme",
        "reconstruction"
      ]
    }
  ],
  "word": "-oi"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "fi",
            "2": "-o"
          },
          "expansion": "Finnish: -o",
          "name": "desc"
        },
        {
          "args": {
            "1": "merged with <i class=\"Latn mention\" lang=\"urj-fin-pro\">*-o</i>"
          },
          "expansion": "(merged with *-o)",
          "name": "q"
        }
      ],
      "text": "Finnish: -o (merged with *-o)"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "izh",
            "2": "-o",
            "id": "denominal"
          },
          "expansion": "Ingrian: -o",
          "name": "desc"
        }
      ],
      "text": "Ingrian: -o"
    }
  ],
  "etymology_text": "Originally an allophonic form of *-i attached to *-a- stems, incurring regular labialization (*-ai > *-oi) in later syllables.",
  "head_templates": [
    {
      "args": {
        "1": "urj-fin-pro",
        "2": "suffix",
        "cat2": "noun-forming suffixes"
      },
      "expansion": "*-oi",
      "name": "head"
    }
  ],
  "lang": "Proto-Finnic",
  "lang_code": "urj-fin-pro",
  "original_title": "Reconstruction:Proto-Finnic/-oi",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Pages using catfix",
        "Pages with 1 entry",
        "Pages with entries",
        "Proto-Finnic entries with incorrect language header",
        "Proto-Finnic lemmas",
        "Proto-Finnic noun-forming suffixes",
        "Proto-Finnic suffixes"
      ],
      "glosses": [
        "Forms mainly diminutive nouns from nominal stems."
      ],
      "tags": [
        "morpheme",
        "reconstruction"
      ]
    }
  ],
  "word": "-oi"
}