"۟" meaning in Arabic

{
  "forms": [
    {
      "form": "◌۟",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ar",
        "2": "letter",
        "head": "◌۟",
        "sc": "Arab",
        "tr": "-"
      },
      "expansion": "◌۟",
      "name": "head"
    }
  ],
  "lang": "Arabic",
  "lang_code": "ar",
  "pos": "character",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Arabic 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": "Arabic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Arabic entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Arabic terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "مِا۟ئَةٌ"
        }
      ],
      "glosses": [
        "used to indicate that a letter is silent"
      ],
      "id": "en-۟-ar-character-pPyvSvyY",
      "links": [
        [
          "silent",
          "silent#English"
        ]
      ],
      "tags": [
        "letter"
      ],
      "wikipedia": [
        "ar:قائمة علامات ضبط المصحف"
      ]
    }
  ],
  "word": "۟"
}

{
  "forms": [
    {
      "form": "◌۟",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ar",
        "2": "letter",
        "head": "◌۟",
        "sc": "Arab",
        "tr": "-"
      },
      "expansion": "◌۟",
      "name": "head"
    }
  ],
  "lang": "Arabic",
  "lang_code": "ar",
  "pos": "character",
  "senses": [
    {
      "categories": [
        "Arabic diacritical marks",
        "Arabic entries with incorrect language header",
        "Arabic entries with language name categories using raw markup",
        "Arabic lemmas",
        "Arabic letters",
        "Arabic terms with redundant script codes"
      ],
      "examples": [
        {
          "text": "مِا۟ئَةٌ"
        }
      ],
      "glosses": [
        "used to indicate that a letter is silent"
      ],
      "links": [
        [
          "silent",
          "silent#English"
        ]
      ],
      "tags": [
        "letter"
      ],
      "wikipedia": [
        "ar:قائمة علامات ضبط المصحف"
      ]
    }
  ],
  "word": "۟"
}