"êta" meaning in French

{
  "forms": [
    {
      "form": "êta",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "êtas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#",
        "3": "+"
      },
      "expansion": "êta m (plural êta or êtas)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Greek letter names",
          "orig": "fr:Greek 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"
        }
      ],
      "glosses": [
        "eta (Greek letter)"
      ],
      "id": "en-êta-fr-noun-noFEw5qt",
      "links": [
        [
          "eta",
          "eta"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɛ.ta/"
    },
    {
      "ipa": "/e.ta/"
    }
  ],
  "word": "êta"
}

{
  "forms": [
    {
      "form": "êta",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "êtas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#",
        "3": "+"
      },
      "expansion": "êta m (plural êta or êtas)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French 2-syllable words",
        "French countable nouns",
        "French entries with incorrect language header",
        "French lemmas",
        "French masculine nouns",
        "French nouns",
        "French terms with IPA pronunciation",
        "fr:Greek letter names"
      ],
      "glosses": [
        "eta (Greek letter)"
      ],
      "links": [
        [
          "eta",
          "eta"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɛ.ta/"
    },
    {
      "ipa": "/e.ta/"
    }
  ],
  "word": "êta"
}