"kervel" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de verbes en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "gervel",
      "tags": [
        "infinitive",
        "unmutated"
      ]
    },
    {
      "form": "cʼhervel",
      "tags": [
        "infinitive",
        "mutation-soft"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              50,
              56
            ]
          ],
          "ref": "Jakez Konan, Un Taol-Strap, in Al Liamm, nᵒ 74, mai–juin 1959, page 202",
          "text": "Setu perak e cʼhellis kregiñ er pellgomzer hag ho kervel.",
          "translation": "Voilà pourquoi j’ai pu attraper le téléphone et vous appeler."
        }
      ],
      "form_of": [
        {
          "word": "gervel"
        }
      ],
      "glosses": [
        "Forme mutée de gervel par durcissement."
      ],
      "id": "fr-kervel-br-verb-biAsFNWb"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈkɛr.vɛl\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "kervel"
}

{
  "categories": [
    "Formes de verbes en breton",
    "breton"
  ],
  "forms": [
    {
      "form": "gervel",
      "tags": [
        "infinitive",
        "unmutated"
      ]
    },
    {
      "form": "cʼhervel",
      "tags": [
        "infinitive",
        "mutation-soft"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "categories": [
        "Exemples en breton"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              50,
              56
            ]
          ],
          "ref": "Jakez Konan, Un Taol-Strap, in Al Liamm, nᵒ 74, mai–juin 1959, page 202",
          "text": "Setu perak e cʼhellis kregiñ er pellgomzer hag ho kervel.",
          "translation": "Voilà pourquoi j’ai pu attraper le téléphone et vous appeler."
        }
      ],
      "form_of": [
        {
          "word": "gervel"
        }
      ],
      "glosses": [
        "Forme mutée de gervel par durcissement."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈkɛr.vɛl\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "kervel"
}