"эй" meaning in Erzya

{
  "etymology_templates": [
    {
      "args": {
        "1": "myv",
        "2": "urj-mdv-pro",
        "3": "*jäŋ",
        "4": "*jäj"
      },
      "expansion": "Proto-Mordvinic *jäj",
      "name": "inh"
    },
    {
      "args": {
        "1": "urj-mdv-pro",
        "2": "*jäŋ"
      },
      "expansion": "*jäŋ",
      "name": "m"
    },
    {
      "args": {
        "1": "myv",
        "2": "urj-pro",
        "3": "*jäŋe"
      },
      "expansion": "Proto-Uralic *jäŋe",
      "name": "inh"
    },
    {
      "args": {
        "1": "mdf",
        "2": "эй"
      },
      "expansion": "Moksha 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": "mhr",
        "2": "ий"
      },
      "expansion": "Eastern Mari ий (ij)",
      "name": "cog"
    },
    {
      "args": {
        "1": "hu",
        "2": "jég"
      },
      "expansion": "Hungarian jég",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Mordvinic *jäj~*jäŋ, from Proto-Uralic *jäŋe. Cognates include Moksha эй (ej), Finnish jää, Livonian jeij, Northern Sami jiekŋa, Eastern Mari ий (ij), Hungarian jég.",
  "forms": [
    {
      "form": "ej",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "myv",
        "2": "noun"
      },
      "expansion": "эй • (ej)",
      "name": "head"
    }
  ],
  "lang": "Erzya",
  "lang_code": "myv",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Erzya entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "cold as ice",
          "roman": "keľme ťeke ej",
          "text": "кельме теке эй",
          "type": "example"
        }
      ],
      "glosses": [
        "ice"
      ],
      "id": "en-эй-myv-noun-TLCyUMYl",
      "links": [
        [
          "ice",
          "ice"
        ]
      ]
    }
  ],
  "word": "эй"
}

{
  "categories": [
    "ru:Letter names"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "myv",
        "2": "urj-mdv-pro",
        "3": "*jäŋ",
        "4": "*jäj"
      },
      "expansion": "Proto-Mordvinic *jäj",
      "name": "inh"
    },
    {
      "args": {
        "1": "urj-mdv-pro",
        "2": "*jäŋ"
      },
      "expansion": "*jäŋ",
      "name": "m"
    },
    {
      "args": {
        "1": "myv",
        "2": "urj-pro",
        "3": "*jäŋe"
      },
      "expansion": "Proto-Uralic *jäŋe",
      "name": "inh"
    },
    {
      "args": {
        "1": "mdf",
        "2": "эй"
      },
      "expansion": "Moksha 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": "mhr",
        "2": "ий"
      },
      "expansion": "Eastern Mari ий (ij)",
      "name": "cog"
    },
    {
      "args": {
        "1": "hu",
        "2": "jég"
      },
      "expansion": "Hungarian jég",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Mordvinic *jäj~*jäŋ, from Proto-Uralic *jäŋe. Cognates include Moksha эй (ej), Finnish jää, Livonian jeij, Northern Sami jiekŋa, Eastern Mari ий (ij), Hungarian jég.",
  "forms": [
    {
      "form": "ej",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "myv",
        "2": "noun"
      },
      "expansion": "эй • (ej)",
      "name": "head"
    }
  ],
  "lang": "Erzya",
  "lang_code": "myv",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Erzya entries with incorrect language header",
        "Erzya lemmas",
        "Erzya nouns",
        "Erzya terms derived from Proto-Mordvinic",
        "Erzya terms derived from Proto-Uralic",
        "Erzya terms inherited from Proto-Mordvinic",
        "Erzya terms inherited from Proto-Uralic",
        "Erzya terms with usage examples",
        "Requests for pronunciation in Erzya entries"
      ],
      "examples": [
        {
          "english": "cold as ice",
          "roman": "keľme ťeke ej",
          "text": "кельме теке эй",
          "type": "example"
        }
      ],
      "glosses": [
        "ice"
      ],
      "links": [
        [
          "ice",
          "ice"
        ]
      ]
    }
  ],
  "word": "эй"
}