"par plaisir" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions adverbiales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "→ voir par et plaisir."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "adv",
  "pos_title": "Locution adverbiale",
  "senses": [
    {
      "examples": [
        {
          "text": "Il ne travaille à cela que par plaisir."
        }
      ],
      "glosses": [
        "Par divertissement."
      ],
      "id": "fr-par_plaisir-fr-adv-pCZL-gUf"
    }
  ],
  "sounds": [
    {
      "ipa": "\\paʁ ple.ziʁ\\"
    }
  ],
  "word": "par plaisir"
}

{
  "categories": [
    "Locutions adverbiales en français",
    "français"
  ],
  "etymology_texts": [
    "→ voir par et plaisir."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "adv",
  "pos_title": "Locution adverbiale",
  "senses": [
    {
      "examples": [
        {
          "text": "Il ne travaille à cela que par plaisir."
        }
      ],
      "glosses": [
        "Par divertissement."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\paʁ ple.ziʁ\\"
    }
  ],
  "word": "par plaisir"
}