"a pro pena" meaning in Occitan

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en occitan",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions adverbiales en occitan",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Occitan en graphie normalisée",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Occitan",
      "orig": "occitan",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de a, pro et pena."
  ],
  "lang": "Occitan",
  "lang_code": "oc",
  "pos": "adv",
  "pos_title": "Locution adverbiale",
  "raw_tags": [
    "graphie normalisée"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en occitan",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Sèrgi Viaule, Qualques nòvas d’Albigés, 2002",
          "text": "Li balhem lo bonjorn, lo nos torna en desclavant a pro pena las dents. Nos saluda en frachimand.",
          "translation": "Nous lui donnons le bonjour, il nous le rend en desserrant à grand-peine les dents. Il nous salue en français."
        }
      ],
      "glosses": [
        "À grand-peine."
      ],
      "id": "fr-a_pro_pena-oc-adv-roe3hpxC"
    }
  ],
  "sounds": [
    {
      "ipa": "\\a ˈpɾu ˈpeno̯\\"
    }
  ],
  "synonyms": [
    {
      "word": "a malas penas"
    }
  ],
  "word": "a pro pena"
}

{
  "categories": [
    "Compositions en occitan",
    "Locutions adverbiales en occitan",
    "Occitan en graphie normalisée",
    "occitan"
  ],
  "etymology_texts": [
    "Composé de a, pro et pena."
  ],
  "lang": "Occitan",
  "lang_code": "oc",
  "pos": "adv",
  "pos_title": "Locution adverbiale",
  "raw_tags": [
    "graphie normalisée"
  ],
  "senses": [
    {
      "categories": [
        "Exemples en occitan"
      ],
      "examples": [
        {
          "ref": "Sèrgi Viaule, Qualques nòvas d’Albigés, 2002",
          "text": "Li balhem lo bonjorn, lo nos torna en desclavant a pro pena las dents. Nos saluda en frachimand.",
          "translation": "Nous lui donnons le bonjour, il nous le rend en desserrant à grand-peine les dents. Il nous salue en français."
        }
      ],
      "glosses": [
        "À grand-peine."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\a ˈpɾu ˈpeno̯\\"
    }
  ],
  "synonyms": [
    {
      "word": "a malas penas"
    }
  ],
  "word": "a pro pena"
}