"◌ᷠ" meaning in Old Norse

{
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "diacritical mark"
      },
      "expansion": "◌ᷠ",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "character",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Old Norse 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": "Old Norse entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Old Norse terms in nonstandard scripts",
          "parents": [
            "Terms in nonstandard scripts",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "For example, ⟨siðᷠ⟩ for siðan 'since'"
        }
      ],
      "glosses": [
        "An abbreviation of the letter ⟨n⟩."
      ],
      "id": "en-◌ᷠ-non-character-gXOpnHeV",
      "links": [
        [
          "n",
          "n#English"
        ]
      ],
      "tags": [
        "diacritic"
      ]
    }
  ],
  "word": "◌ᷠ"
}

{
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "diacritical mark"
      },
      "expansion": "◌ᷠ",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "character",
  "senses": [
    {
      "categories": [
        "Old Norse diacritical marks",
        "Old Norse entries with incorrect language header",
        "Old Norse lemmas",
        "Old Norse terms in nonstandard scripts",
        "Pages with 2 entries"
      ],
      "examples": [
        {
          "text": "For example, ⟨siðᷠ⟩ for siðan 'since'"
        }
      ],
      "glosses": [
        "An abbreviation of the letter ⟨n⟩."
      ],
      "links": [
        [
          "n",
          "n#English"
        ]
      ],
      "tags": [
        "diacritic"
      ]
    }
  ],
  "word": "◌ᷠ"
}