"◌̂" meaning in English

{
  "lang": "English",
  "lang_code": "en",
  "pos": "character",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "English 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": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms in nonstandard scripts",
          "parents": [
            "Terms in nonstandard scripts",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Retained in foreign loan words (mostly French): château, crème brûlée, crêpe, maître d', mêlée, papier-mâché, rôle, tête-à-tête."
      ],
      "id": "en-◌̂-en-character-2e5PoTx4",
      "links": [
        [
          "château",
          "château#English"
        ],
        [
          "crème brûlée",
          "crème brûlée#English"
        ],
        [
          "crêpe",
          "crêpe#English"
        ],
        [
          "maître d'",
          "maître d'#English"
        ],
        [
          "mêlée",
          "mêlée#English"
        ],
        [
          "papier-mâché",
          "papier-mâché#English"
        ],
        [
          "rôle",
          "rôle#English"
        ],
        [
          "tête-à-tête",
          "tête-à-tête#English"
        ]
      ],
      "tags": [
        "diacritic"
      ]
    }
  ],
  "word": "◌̂"
}

{
  "lang": "English",
  "lang_code": "en",
  "pos": "character",
  "senses": [
    {
      "categories": [
        "English diacritical marks",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms in nonstandard scripts"
      ],
      "glosses": [
        "Retained in foreign loan words (mostly French): château, crème brûlée, crêpe, maître d', mêlée, papier-mâché, rôle, tête-à-tête."
      ],
      "links": [
        [
          "château",
          "château#English"
        ],
        [
          "crème brûlée",
          "crème brûlée#English"
        ],
        [
          "crêpe",
          "crêpe#English"
        ],
        [
          "maître d'",
          "maître d'#English"
        ],
        [
          "mêlée",
          "mêlée#English"
        ],
        [
          "papier-mâché",
          "papier-mâché#English"
        ],
        [
          "rôle",
          "rôle#English"
        ],
        [
          "tête-à-tête",
          "tête-à-tête#English"
        ]
      ],
      "tags": [
        "diacritic"
      ]
    }
  ],
  "word": "◌̂"
}