"serẽa" meaning in Old Galician-Portuguese

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gl",
            "2": "serea"
          },
          "expansion": "Galician: serea",
          "name": "desc"
        }
      ],
      "text": "Galician: serea"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "pt",
            "2": "sereia"
          },
          "expansion": "Portuguese: sereia",
          "name": "desc"
        }
      ],
      "text": "Portuguese: sereia"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "roa-opt",
        "2": "LL.",
        "3": "sirēna"
      },
      "expansion": "Late Latin sirēna",
      "name": "der"
    },
    {
      "args": {
        "1": "roa-opt",
        "2": "la",
        "3": "Sīrēn",
        "4": "",
        "5": "siren"
      },
      "expansion": "Latin Sīrēn (“siren”)",
      "name": "der"
    },
    {
      "args": {
        "1": "roa-opt",
        "2": "grc",
        "3": "Σειρήν"
      },
      "expansion": "Ancient Greek Σειρήν (Seirḗn)",
      "name": "der"
    }
  ],
  "etymology_text": "From Late Latin sirēna, from Latin Sīrēn (“siren”), from Ancient Greek Σειρήν (Seirḗn).",
  "head_templates": [
    {
      "args": {
        "1": "roa-opt",
        "2": "noun",
        "3": "",
        "4": "",
        "g": "f",
        "head": ""
      },
      "expansion": "serẽa f",
      "name": "head"
    },
    {
      "args": {
        "1": "f"
      },
      "expansion": "serẽa f",
      "name": "roa-opt-noun"
    }
  ],
  "lang": "Old Galician-Portuguese",
  "lang_code": "roa-opt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Galician-Portuguese 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"
        }
      ],
      "glosses": [
        "mermaid (mythological woman with a fish's tail)"
      ],
      "id": "en-serẽa-roa-opt-noun-G94Vt0CO",
      "links": [
        [
          "mermaid",
          "mermaid"
        ]
      ],
      "synonyms": [
        {
          "word": "serea"
        }
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/seˈɾẽ.a/"
    },
    {
      "ipa": "[s̺eˈɾẽ.a]"
    },
    {
      "rhymes": "-ẽa"
    }
  ],
  "word": "serẽa"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gl",
            "2": "serea"
          },
          "expansion": "Galician: serea",
          "name": "desc"
        }
      ],
      "text": "Galician: serea"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "pt",
            "2": "sereia"
          },
          "expansion": "Portuguese: sereia",
          "name": "desc"
        }
      ],
      "text": "Portuguese: sereia"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "roa-opt",
        "2": "LL.",
        "3": "sirēna"
      },
      "expansion": "Late Latin sirēna",
      "name": "der"
    },
    {
      "args": {
        "1": "roa-opt",
        "2": "la",
        "3": "Sīrēn",
        "4": "",
        "5": "siren"
      },
      "expansion": "Latin Sīrēn (“siren”)",
      "name": "der"
    },
    {
      "args": {
        "1": "roa-opt",
        "2": "grc",
        "3": "Σειρήν"
      },
      "expansion": "Ancient Greek Σειρήν (Seirḗn)",
      "name": "der"
    }
  ],
  "etymology_text": "From Late Latin sirēna, from Latin Sīrēn (“siren”), from Ancient Greek Σειρήν (Seirḗn).",
  "head_templates": [
    {
      "args": {
        "1": "roa-opt",
        "2": "noun",
        "3": "",
        "4": "",
        "g": "f",
        "head": ""
      },
      "expansion": "serẽa f",
      "name": "head"
    },
    {
      "args": {
        "1": "f"
      },
      "expansion": "serẽa f",
      "name": "roa-opt-noun"
    }
  ],
  "lang": "Old Galician-Portuguese",
  "lang_code": "roa-opt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Old Galician-Portuguese entries with incorrect language header",
        "Old Galician-Portuguese feminine nouns",
        "Old Galician-Portuguese lemmas",
        "Old Galician-Portuguese nouns",
        "Old Galician-Portuguese terms derived from Ancient Greek",
        "Old Galician-Portuguese terms derived from Late Latin",
        "Old Galician-Portuguese terms derived from Latin",
        "Pages with 1 entry",
        "Rhymes:Old Galician-Portuguese/ẽa",
        "Rhymes:Old Galician-Portuguese/ẽa/3 syllables"
      ],
      "glosses": [
        "mermaid (mythological woman with a fish's tail)"
      ],
      "links": [
        [
          "mermaid",
          "mermaid"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/seˈɾẽ.a/"
    },
    {
      "ipa": "[s̺eˈɾẽ.a]"
    },
    {
      "rhymes": "-ẽa"
    }
  ],
  "synonyms": [
    {
      "word": "serea"
    }
  ],
  "word": "serẽa"
}