"brenin" 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": "prenin",
      "tags": [
        "unmutated"
      ]
    },
    {
      "form": "frenin",
      "tags": [
        "mutation-spirant"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "paronyms": [
    {
      "word": "brennin"
    }
  ],
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Tad Medar, Diwar cʼhoarzin..., Ar vuhez kristen, Roscoff, 1945, page 104",
          "text": "— Da werza ha da brena. Eul leue am eus da gas, hag eur vuocʼh a brenin mar gellan...",
          "translation": "— Pour vendre et pour acheter. J’ai un veau à envoyer, et j’achèterai une vache si je peux..."
        }
      ],
      "form_of": [
        {
          "word": "prenin"
        }
      ],
      "glosses": [
        "Forme mutée de prenin par adoucissement."
      ],
      "id": "fr-brenin-br-verb-qtPQqIm-"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈbrẽːnĩn\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "brenin"
}

{
  "categories": [
    "Formes de verbes en breton",
    "breton"
  ],
  "forms": [
    {
      "form": "prenin",
      "tags": [
        "unmutated"
      ]
    },
    {
      "form": "frenin",
      "tags": [
        "mutation-spirant"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "paronyms": [
    {
      "word": "brennin"
    }
  ],
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "categories": [
        "Exemples en breton"
      ],
      "examples": [
        {
          "ref": "Tad Medar, Diwar cʼhoarzin..., Ar vuhez kristen, Roscoff, 1945, page 104",
          "text": "— Da werza ha da brena. Eul leue am eus da gas, hag eur vuocʼh a brenin mar gellan...",
          "translation": "— Pour vendre et pour acheter. J’ai un veau à envoyer, et j’achèterai une vache si je peux..."
        }
      ],
      "form_of": [
        {
          "word": "prenin"
        }
      ],
      "glosses": [
        "Forme mutée de prenin par adoucissement."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈbrẽːnĩn\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "brenin"
}