"lark about" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions verbales en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Termes familiers en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Anglais du Royaume-Uni",
          "orig": "anglais du Royaume-Uni",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Faire le fou."
      ],
      "id": "fr-lark_about-en-verb-d2B0AvXX",
      "raw_tags": [
        "Royaume-Uni"
      ],
      "tags": [
        "familiar"
      ]
    }
  ],
  "word": "lark about"
}

{
  "categories": [
    "Locutions verbales en anglais",
    "anglais"
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "senses": [
    {
      "categories": [
        "Termes familiers en anglais",
        "anglais du Royaume-Uni"
      ],
      "glosses": [
        "Faire le fou."
      ],
      "raw_tags": [
        "Royaume-Uni"
      ],
      "tags": [
        "familiar"
      ]
    }
  ],
  "word": "lark about"
}