"mby'a" meaning in Old Tupi

{
  "head_templates": [
    {
      "args": {
        "1": "tpw",
        "2": "noun form"
      },
      "expansion": "mby'a",
      "name": "head"
    }
  ],
  "hyphenation": [
    "mby‧'a"
  ],
  "lang": "Old Tupi",
  "lang_code": "tpw",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "my'a"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Old Tupi 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": [
        "Alternative form of my'a"
      ],
      "id": "en-mby'a-tpw-noun-rAbuO-QB",
      "links": [
        [
          "my'a",
          "my'a#Old_Tupi"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ᵐbɨˈʔa/"
    },
    {
      "rhymes": "-a"
    }
  ],
  "word": "mby'a"
}

{
  "head_templates": [
    {
      "args": {
        "1": "tpw",
        "2": "noun form"
      },
      "expansion": "mby'a",
      "name": "head"
    }
  ],
  "hyphenation": [
    "mby‧'a"
  ],
  "lang": "Old Tupi",
  "lang_code": "tpw",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "my'a"
        }
      ],
      "categories": [
        "Old Tupi entries with incorrect language header",
        "Old Tupi non-lemma forms",
        "Old Tupi noun forms",
        "Pages with 1 entry",
        "Rhymes:Old Tupi/a",
        "Rhymes:Old Tupi/a/1 syllable"
      ],
      "glosses": [
        "Alternative form of my'a"
      ],
      "links": [
        [
          "my'a",
          "my'a#Old_Tupi"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ᵐbɨˈʔa/"
    },
    {
      "rhymes": "-a"
    }
  ],
  "word": "mby'a"
}