"эстейнек" meaning in Moksha

{
  "forms": [
    {
      "form": "esťejńek",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mdf",
        "2": "pronoun form"
      },
      "expansion": "эстейнек • (esťejńek)",
      "name": "head"
    }
  ],
  "lang": "Moksha",
  "lang_code": "mdf",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Moksha entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "eś",
          "word": "эсь"
        }
      ],
      "glosses": [
        "indefinite plural dative of эсь (eś)"
      ],
      "id": "en-эстейнек-mdf-pron-tWQvCsec",
      "links": [
        [
          "эсь",
          "эсь#Moksha"
        ]
      ],
      "tags": [
        "dative",
        "form-of",
        "indefinite",
        "plural"
      ]
    }
  ],
  "word": "эстейнек"
}

{
  "forms": [
    {
      "form": "esťejńek",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mdf",
        "2": "pronoun form"
      },
      "expansion": "эстейнек • (esťejńek)",
      "name": "head"
    }
  ],
  "lang": "Moksha",
  "lang_code": "mdf",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        "Moksha entries with incorrect language header",
        "Moksha non-lemma forms",
        "Moksha pronoun forms",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "form_of": [
        {
          "extra": "eś",
          "word": "эсь"
        }
      ],
      "glosses": [
        "indefinite plural dative of эсь (eś)"
      ],
      "links": [
        [
          "эсь",
          "эсь#Moksha"
        ]
      ],
      "tags": [
        "dative",
        "form-of",
        "indefinite",
        "plural"
      ]
    }
  ],
  "word": "эстейнек"
}