"⠐⠂" meaning in Arabic

{
  "head_templates": [
    {
      "args": {
        "1": "ar",
        "2": "punctuation mark",
        "tr": ":"
      },
      "expansion": "⠐⠂ • (:)",
      "name": "head"
    }
  ],
  "lang": "Arabic",
  "lang_code": "ar",
  "pos": "punct",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Arabic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Arabic punctuation marks",
          "parents": [
            "Punctuation marks",
            "Letters, symbols, and punctuation",
            "Symbols",
            "Orthography",
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "the colon, ⟨:⟩"
      ],
      "id": "en-⠐⠂-ar-punct-AjF72h0c",
      "raw_tags": [
        "punctuation"
      ]
    }
  ],
  "word": "⠐⠂"
}

{
  "head_templates": [
    {
      "args": {
        "1": "ar",
        "2": "punctuation mark",
        "tr": ":"
      },
      "expansion": "⠐⠂ • (:)",
      "name": "head"
    }
  ],
  "lang": "Arabic",
  "lang_code": "ar",
  "pos": "punct",
  "senses": [
    {
      "categories": [
        "Arabic entries with incorrect language header",
        "Arabic lemmas",
        "Arabic punctuation marks",
        "Pages with 4 entries",
        "Pages with entries"
      ],
      "glosses": [
        "the colon, ⟨:⟩"
      ],
      "raw_tags": [
        "punctuation"
      ]
    }
  ],
  "word": "⠐⠂"
}

{
  "called_from": "form_descriptions/1698",
  "msg": "unrecognized head form: :",
  "path": [
    "⠐⠂"
  ],
  "section": "Arabic",
  "subsection": "punctuation mark",
  "title": "⠐⠂",
  "trace": ""
}