"parentesi quadra" meaning in Italian

{
  "forms": [
    {
      "form": "parentesi quadre",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "parentesi quadra f (plural parentesi quadre)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "it",
          "name": "Typography",
          "orig": "it:Typography",
          "parents": [
            "Printing",
            "Writing",
            "Industries",
            "Human behaviour",
            "Language",
            "Business",
            "Human",
            "Communication",
            "Economics",
            "Society",
            "All topics",
            "Social sciences",
            "Fundamental",
            "Sciences"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "square bracket"
      ],
      "id": "en-parentesi_quadra-it-noun-BiDqrBhR",
      "links": [
        [
          "typography",
          "typography"
        ],
        [
          "square bracket",
          "square bracket"
        ]
      ],
      "raw_glosses": [
        "(typography) square bracket"
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "media",
        "publishing",
        "typography"
      ]
    }
  ],
  "word": "parentesi quadra"
}

{
  "forms": [
    {
      "form": "parentesi quadre",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "parentesi quadra f (plural parentesi quadre)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Italian countable nouns",
        "Italian entries with incorrect language header",
        "Italian feminine nouns",
        "Italian lemmas",
        "Italian multiword terms",
        "Italian nouns",
        "it:Typography"
      ],
      "glosses": [
        "square bracket"
      ],
      "links": [
        [
          "typography",
          "typography"
        ],
        [
          "square bracket",
          "square bracket"
        ]
      ],
      "raw_glosses": [
        "(typography) square bracket"
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "media",
        "publishing",
        "typography"
      ]
    }
  ],
  "word": "parentesi quadra"
}