"ᝳ" meaning in Translingual

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "diacritical mark",
        "3": "",
        "sc": "Tagb"
      },
      "expansion": "ᝳ",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "character",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Translingual diacritical marks",
          "parents": [
            "Diacritical marks",
            "Letters, symbols, and punctuation",
            "Symbols",
            "Orthography",
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Translingual terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Tagbanwa abugida vowel sign u"
      ],
      "id": "en-ᝳ-mul-character-N1pEaNeE",
      "tags": [
        "letter"
      ]
    }
  ],
  "word": "ᝳ"
}

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "diacritical mark",
        "3": "",
        "sc": "Tagb"
      },
      "expansion": "ᝳ",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "character",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Translingual diacritical marks",
        "Translingual entries with incorrect language header",
        "Translingual lemmas",
        "Translingual terms spelled with ◌ᝳ",
        "Translingual terms with redundant script codes"
      ],
      "glosses": [
        "Tagbanwa abugida vowel sign u"
      ],
      "tags": [
        "letter"
      ]
    }
  ],
  "word": "ᝳ"
}