"эй" meaning in Moksha

{
  "etymology_templates": [
    {
      "args": {
        "1": "mdf",
        "2": "urj-mdv-pro",
        "3": "*jäɣ"
      },
      "expansion": "Proto-Mordvinic *jäɣ",
      "name": "inh"
    },
    {
      "args": {
        "1": "mdf",
        "2": "urj-pro",
        "3": "*jäŋe"
      },
      "expansion": "Proto-Uralic *jäŋe",
      "name": "inh"
    },
    {
      "args": {
        "1": "urj-pro",
        "2": "*jäkšV",
        "3": "",
        "4": "cold or cool"
      },
      "expansion": "Proto-Uralic *jäkšV (“cold or cool”)",
      "name": "cog"
    },
    {
      "args": {
        "1": "myv",
        "2": "эй"
      },
      "expansion": "Erzya эй (ej)",
      "name": "cog"
    },
    {
      "args": {
        "1": "fi",
        "2": "jää"
      },
      "expansion": "Finnish jää",
      "name": "cog"
    },
    {
      "args": {
        "1": "liv",
        "2": "jeij"
      },
      "expansion": "Livonian jeij",
      "name": "cog"
    },
    {
      "args": {
        "1": "se",
        "2": "jiekŋa"
      },
      "expansion": "Northern Sami jiekŋa",
      "name": "cog"
    },
    {
      "args": {
        "1": "hu",
        "2": "jég"
      },
      "expansion": "Hungarian jég",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Mordvinic *jäɣ from Proto-Uralic *jäŋe. Compare Proto-Uralic *jäkšV (“cold or cool”). Cognates include Erzya эй (ej), Finnish jää, Livonian jeij, Northern Sami jiekŋa and Hungarian jég.",
  "forms": [
    {
      "form": "äj",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mdf",
        "2": "noun",
        "tr": "äj"
      },
      "expansion": "эй • (äj)",
      "name": "head"
    }
  ],
  "lang": "Moksha",
  "lang_code": "mdf",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Moksha entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Moksha terms with non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "ice"
      ],
      "id": "en-эй-mdf-noun-TLCyUMYl",
      "links": [
        [
          "ice",
          "ice"
        ]
      ]
    }
  ],
  "word": "эй"
}

{
  "categories": [
    "ru:Letter names"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "mdf",
        "2": "urj-mdv-pro",
        "3": "*jäɣ"
      },
      "expansion": "Proto-Mordvinic *jäɣ",
      "name": "inh"
    },
    {
      "args": {
        "1": "mdf",
        "2": "urj-pro",
        "3": "*jäŋe"
      },
      "expansion": "Proto-Uralic *jäŋe",
      "name": "inh"
    },
    {
      "args": {
        "1": "urj-pro",
        "2": "*jäkšV",
        "3": "",
        "4": "cold or cool"
      },
      "expansion": "Proto-Uralic *jäkšV (“cold or cool”)",
      "name": "cog"
    },
    {
      "args": {
        "1": "myv",
        "2": "эй"
      },
      "expansion": "Erzya эй (ej)",
      "name": "cog"
    },
    {
      "args": {
        "1": "fi",
        "2": "jää"
      },
      "expansion": "Finnish jää",
      "name": "cog"
    },
    {
      "args": {
        "1": "liv",
        "2": "jeij"
      },
      "expansion": "Livonian jeij",
      "name": "cog"
    },
    {
      "args": {
        "1": "se",
        "2": "jiekŋa"
      },
      "expansion": "Northern Sami jiekŋa",
      "name": "cog"
    },
    {
      "args": {
        "1": "hu",
        "2": "jég"
      },
      "expansion": "Hungarian jég",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Mordvinic *jäɣ from Proto-Uralic *jäŋe. Compare Proto-Uralic *jäkšV (“cold or cool”). Cognates include Erzya эй (ej), Finnish jää, Livonian jeij, Northern Sami jiekŋa and Hungarian jég.",
  "forms": [
    {
      "form": "äj",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mdf",
        "2": "noun",
        "tr": "äj"
      },
      "expansion": "эй • (äj)",
      "name": "head"
    }
  ],
  "lang": "Moksha",
  "lang_code": "mdf",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Moksha entries with incorrect language header",
        "Moksha lemmas",
        "Moksha nouns",
        "Moksha terms derived from Proto-Mordvinic",
        "Moksha terms derived from Proto-Uralic",
        "Moksha terms inherited from Proto-Mordvinic",
        "Moksha terms inherited from Proto-Uralic",
        "Moksha terms with non-redundant manual transliterations"
      ],
      "glosses": [
        "ice"
      ],
      "links": [
        [
          "ice",
          "ice"
        ]
      ]
    }
  ],
  "word": "эй"
}