"-а-" meaning in Belarusian

{
  "etymology_templates": [
    {
      "args": {
        "1": "Inherited"
      },
      "expansion": "Inherited",
      "name": "glossary"
    },
    {
      "args": {
        "1": "be",
        "2": "zle-ort",
        "3": "-о-",
        "4": "",
        "5": "",
        "g": "",
        "g2": "",
        "g3": "",
        "id": "",
        "lit": "",
        "nocat": "",
        "pos": "",
        "sc": "",
        "sort": "",
        "tr": "",
        "ts": ""
      },
      "expansion": "Old Ruthenian -о- (-o-)",
      "name": "inh"
    },
    {
      "args": {
        "1": "be",
        "2": "zle-ort",
        "3": "-о-"
      },
      "expansion": "Inherited from Old Ruthenian -о- (-o-)",
      "name": "inh+"
    },
    {
      "args": {
        "1": "be",
        "2": "orv",
        "3": "-о-"
      },
      "expansion": "Old East Slavic -о- (-o-)",
      "name": "inh"
    },
    {
      "args": {
        "1": "be",
        "2": "sla-pro",
        "3": "*-o-"
      },
      "expansion": "Proto-Slavic *-o-",
      "name": "inh"
    },
    {
      "args": {
        "1": "ru,uk",
        "2": "-о-"
      },
      "expansion": "Russian and Ukrainian -о- (-o-)",
      "name": "cog"
    }
  ],
  "etymology_text": "Inherited from Old Ruthenian -о- (-o-), from Old East Slavic -о- (-o-), from Proto-Slavic *-o-. Compare Russian and Ukrainian -о- (-o-).",
  "forms": [
    {
      "form": "-a-",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "be",
        "2": "interfix"
      },
      "expansion": "-а- • (-a-)",
      "name": "head"
    }
  ],
  "lang": "Belarusian",
  "lang_code": "be",
  "pos": "interfix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Belarusian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Belarusian interfixes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "interfix used to form compounds"
      ],
      "id": "en--а--be-interfix-gO-sIMOE",
      "synonyms": [
        {
          "roman": "-o-",
          "tags": [
            "stressed"
          ],
          "word": "-о-"
        },
        {
          "english": "used after some palatalized and hushing consonants",
          "roman": "-je-",
          "word": "-е-"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-а-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "Inherited"
      },
      "expansion": "Inherited",
      "name": "glossary"
    },
    {
      "args": {
        "1": "be",
        "2": "zle-ort",
        "3": "-о-",
        "4": "",
        "5": "",
        "g": "",
        "g2": "",
        "g3": "",
        "id": "",
        "lit": "",
        "nocat": "",
        "pos": "",
        "sc": "",
        "sort": "",
        "tr": "",
        "ts": ""
      },
      "expansion": "Old Ruthenian -о- (-o-)",
      "name": "inh"
    },
    {
      "args": {
        "1": "be",
        "2": "zle-ort",
        "3": "-о-"
      },
      "expansion": "Inherited from Old Ruthenian -о- (-o-)",
      "name": "inh+"
    },
    {
      "args": {
        "1": "be",
        "2": "orv",
        "3": "-о-"
      },
      "expansion": "Old East Slavic -о- (-o-)",
      "name": "inh"
    },
    {
      "args": {
        "1": "be",
        "2": "sla-pro",
        "3": "*-o-"
      },
      "expansion": "Proto-Slavic *-o-",
      "name": "inh"
    },
    {
      "args": {
        "1": "ru,uk",
        "2": "-о-"
      },
      "expansion": "Russian and Ukrainian -о- (-o-)",
      "name": "cog"
    }
  ],
  "etymology_text": "Inherited from Old Ruthenian -о- (-o-), from Old East Slavic -о- (-o-), from Proto-Slavic *-o-. Compare Russian and Ukrainian -о- (-o-).",
  "forms": [
    {
      "form": "-a-",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "be",
        "2": "interfix"
      },
      "expansion": "-а- • (-a-)",
      "name": "head"
    }
  ],
  "lang": "Belarusian",
  "lang_code": "be",
  "pos": "interfix",
  "senses": [
    {
      "categories": [
        "Belarusian entries with incorrect language header",
        "Belarusian interfixes",
        "Belarusian lemmas",
        "Belarusian terms derived from Old East Slavic",
        "Belarusian terms derived from Old Ruthenian",
        "Belarusian terms derived from Proto-Slavic",
        "Belarusian terms inherited from Old East Slavic",
        "Belarusian terms inherited from Old Ruthenian",
        "Belarusian terms inherited from Proto-Slavic",
        "Pages with 1 entry"
      ],
      "glosses": [
        "interfix used to form compounds"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "synonyms": [
    {
      "roman": "-o-",
      "tags": [
        "stressed"
      ],
      "word": "-о-"
    },
    {
      "english": "used after some palatalized and hushing consonants",
      "roman": "-je-",
      "word": "-е-"
    }
  ],
  "word": "-а-"
}