"зэ" meaning in Russian

{
  "forms": [
    {
      "form": "zɛ",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "зэ",
        "2": "n-in",
        "3": "-"
      },
      "expansion": "зэ • (zɛ) n inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ru",
          "name": "Cyrillic letter names",
          "orig": "ru:Cyrillic letter names",
          "parents": [
            "Letter names",
            "Letters, symbols, and punctuation",
            "Names",
            "Orthography",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Writing",
            "Fundamental",
            "Nouns",
            "Human behaviour",
            "Language",
            "Lemmas",
            "Human",
            "Communication"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ru",
          "name": "Letter names",
          "orig": "ru:Letter names",
          "parents": [
            "Letters, symbols, and punctuation",
            "Names",
            "Orthography",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Writing",
            "Fundamental",
            "Nouns",
            "Human behaviour",
            "Language",
            "Lemmas",
            "Human",
            "Communication"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "the Cyrillic letter З (Z), з (z)"
      ],
      "id": "en-зэ-ru-noun-JDD2I30z",
      "links": [
        [
          "З",
          "З#Russian"
        ],
        [
          "з",
          "з#Russian"
        ]
      ],
      "synonyms": [
        {
          "word": "зэд"
        },
        {
          "word": "зэт"
        }
      ],
      "tags": [
        "indeclinable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[zɛ]"
    },
    {
      "audio": "Ru-зэ.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/03/Ru-%D0%B7%D1%8D.ogg/Ru-%D0%B7%D1%8D.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/0/03/Ru-%D0%B7%D1%8D.ogg"
    }
  ],
  "word": "зэ"
}

{
  "forms": [
    {
      "form": "zɛ",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "зэ",
        "2": "n-in",
        "3": "-"
      },
      "expansion": "зэ • (zɛ) n inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 4 entries",
        "Pages with entries",
        "Russian 1-syllable words",
        "Russian entries with incorrect language header",
        "Russian inanimate nouns",
        "Russian indeclinable nouns",
        "Russian lemmas",
        "Russian neuter nouns",
        "Russian nouns",
        "Russian terms with IPA pronunciation",
        "Russian terms with redundant head parameter",
        "ru:Cyrillic letter names",
        "ru:Letter names"
      ],
      "glosses": [
        "the Cyrillic letter З (Z), з (z)"
      ],
      "links": [
        [
          "З",
          "З#Russian"
        ],
        [
          "з",
          "з#Russian"
        ]
      ],
      "synonyms": [
        {
          "word": "зэд"
        },
        {
          "word": "зэт"
        }
      ],
      "tags": [
        "indeclinable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[zɛ]"
    },
    {
      "audio": "Ru-зэ.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/03/Ru-%D0%B7%D1%8D.ogg/Ru-%D0%B7%D1%8D.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/0/03/Ru-%D0%B7%D1%8D.ogg"
    }
  ],
  "word": "зэ"
}