"best seller" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "en",
        "3": "best seller"
      },
      "expansion": "Unadapted borrowing from English best seller",
      "name": "ubor"
    }
  ],
  "etymology_text": "Unadapted borrowing from English best seller.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#"
      },
      "expansion": "best seller m (invariable)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "bestseller"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of bestseller"
      ],
      "id": "en-best_seller-it-noun-2OWB8Vle",
      "links": [
        [
          "bestseller",
          "bestseller#Italian"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "invariable",
        "masculine"
      ]
    }
  ],
  "word": "best seller"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "en",
        "3": "best seller"
      },
      "expansion": "Unadapted borrowing from English best seller",
      "name": "ubor"
    }
  ],
  "etymology_text": "Unadapted borrowing from English best seller.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#"
      },
      "expansion": "best seller m (invariable)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "bestseller"
        }
      ],
      "categories": [
        "Italian countable nouns",
        "Italian entries with incorrect language header",
        "Italian indeclinable nouns",
        "Italian lemmas",
        "Italian masculine nouns",
        "Italian multiword terms",
        "Italian nouns",
        "Italian terms borrowed from English",
        "Italian terms derived from English",
        "Italian unadapted borrowings from English",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "glosses": [
        "Alternative form of bestseller"
      ],
      "links": [
        [
          "bestseller",
          "bestseller#Italian"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "invariable",
        "masculine"
      ]
    }
  ],
  "word": "best seller"
}