"sonotone" meaning in French

{
  "etymology_text": "From the trademark Sonotone, manufacturer of hearing aids from 1929 to 2005.",
  "forms": [
    {
      "form": "sonotones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "sonotone m (plural sonotones)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Hearing",
          "orig": "fr:Hearing",
          "parents": [
            "Senses",
            "Perception",
            "Body",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of audioprothèse"
      ],
      "id": "en-sonotone-fr-noun-6hUSvzUC",
      "links": [
        [
          "audioprothèse",
          "audioprothèse#French"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "audioprothèse"
        }
      ],
      "tags": [
        "masculine"
      ],
      "wikipedia": [
        "Sonotone (hearing aid)"
      ]
    }
  ],
  "word": "sonotone"
}

{
  "etymology_text": "From the trademark Sonotone, manufacturer of hearing aids from 1929 to 2005.",
  "forms": [
    {
      "form": "sonotones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "sonotone m (plural sonotones)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French lemmas",
        "French masculine nouns",
        "French nouns",
        "Pages with 2 entries",
        "Pages with entries",
        "fr:Hearing"
      ],
      "glosses": [
        "Synonym of audioprothèse"
      ],
      "links": [
        [
          "audioprothèse",
          "audioprothèse#French"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "audioprothèse"
        }
      ],
      "tags": [
        "masculine"
      ],
      "wikipedia": [
        "Sonotone (hearing aid)"
      ]
    }
  ],
  "word": "sonotone"
}