"◌ᷣᷣ" meaning in Latin

{
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "diacritical mark"
      },
      "expansion": "◌ᷣᷣ",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "character",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Latin 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": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Medieval Latin",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "For example: ⟨ııııoᷣᷣ⟩ for quatuor 'four'"
        }
      ],
      "glosses": [
        "An abbreviation of the letter ⟨ꝛ⟩ (r rotunda)."
      ],
      "id": "en-◌ᷣᷣ-la-character-MFXM0EPF",
      "links": [
        [
          "ꝛ",
          "ꝛ#English"
        ]
      ],
      "raw_glosses": [
        "(Medieval Latin) An abbreviation of the letter ⟨ꝛ⟩ (r rotunda)."
      ],
      "tags": [
        "Medieval-Latin",
        "diacritic"
      ]
    }
  ],
  "word": "◌ᷣᷣ"
}

{
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "diacritical mark"
      },
      "expansion": "◌ᷣᷣ",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "character",
  "senses": [
    {
      "categories": [
        "Latin diacritical marks",
        "Latin entries with incorrect language header",
        "Latin lemmas",
        "Latin terms spelled with ◌ᷣ",
        "Medieval Latin",
        "Pages with 3 entries"
      ],
      "examples": [
        {
          "text": "For example: ⟨ııııoᷣᷣ⟩ for quatuor 'four'"
        }
      ],
      "glosses": [
        "An abbreviation of the letter ⟨ꝛ⟩ (r rotunda)."
      ],
      "links": [
        [
          "ꝛ",
          "ꝛ#English"
        ]
      ],
      "raw_glosses": [
        "(Medieval Latin) An abbreviation of the letter ⟨ꝛ⟩ (r rotunda)."
      ],
      "tags": [
        "Medieval-Latin",
        "diacritic"
      ]
    }
  ],
  "word": "◌ᷣᷣ"
}