"@" meaning in Portuguese

{
  "etymology_number": 1,
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "symbol"
      },
      "expansion": "@",
      "name": "head"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        {
          "_dis": "67 33",
          "kind": "other",
          "name": "Portuguese symbols",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "the symbol for the arroba unit of weight"
      ],
      "id": "en-@-pt-symbol-h8o56Ra9",
      "links": [
        [
          "arroba",
          "arroba#Portuguese"
        ]
      ]
    }
  ],
  "word": "@"
}

{
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "pt",
        "2": "en",
        "3": "@",
        "id": "gender"
      },
      "expansion": "Borrowed from English @",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from English @.",
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "symbol"
      },
      "expansion": "@",
      "name": "head"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        {
          "_dis": "4 96",
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "the students",
          "text": "@s alun@s = {os alunos, as alunas}",
          "translation": "the students",
          "type": "example"
        },
        {
          "english": "this user",
          "text": "est@ usuári@ = {este usuário, esta usuária}",
          "translation": "this user",
          "type": "example"
        }
      ],
      "glosses": [
        "gender-neutral replacement for masculine -o or -e and feminine -a"
      ],
      "id": "en-@-pt-symbol-xxQD0fF7",
      "links": [
        [
          "-o",
          "-o#Portuguese"
        ],
        [
          "-e",
          "-e#Portuguese"
        ],
        [
          "-a",
          "-a#Portuguese"
        ]
      ],
      "raw_glosses": [
        "(chiefly proscribed) gender-neutral replacement for masculine -o or -e and feminine -a"
      ],
      "synonyms": [
        {
          "word": "-x"
        },
        {
          "word": "-e"
        }
      ],
      "tags": [
        "proscribed"
      ]
    }
  ],
  "word": "@"
}

{
  "categories": [
    "Pages with 13 entries",
    "Pages with entries",
    "Portuguese entries with incorrect language header",
    "Portuguese lemmas",
    "Portuguese symbols",
    "Portuguese terms borrowed from English",
    "Portuguese terms derived from English"
  ],
  "etymology_number": 1,
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "symbol"
      },
      "expansion": "@",
      "name": "head"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "symbol",
  "senses": [
    {
      "glosses": [
        "the symbol for the arroba unit of weight"
      ],
      "links": [
        [
          "arroba",
          "arroba#Portuguese"
        ]
      ]
    }
  ],
  "word": "@"
}

{
  "categories": [
    "Pages with 13 entries",
    "Pages with entries",
    "Portuguese entries with incorrect language header",
    "Portuguese lemmas",
    "Portuguese symbols",
    "Portuguese terms borrowed from English",
    "Portuguese terms derived from English"
  ],
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "pt",
        "2": "en",
        "3": "@",
        "id": "gender"
      },
      "expansion": "Borrowed from English @",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from English @.",
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "symbol"
      },
      "expansion": "@",
      "name": "head"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        "Portuguese proscribed terms",
        "Portuguese terms with usage examples"
      ],
      "examples": [
        {
          "english": "the students",
          "text": "@s alun@s = {os alunos, as alunas}",
          "translation": "the students",
          "type": "example"
        },
        {
          "english": "this user",
          "text": "est@ usuári@ = {este usuário, esta usuária}",
          "translation": "this user",
          "type": "example"
        }
      ],
      "glosses": [
        "gender-neutral replacement for masculine -o or -e and feminine -a"
      ],
      "links": [
        [
          "-o",
          "-o#Portuguese"
        ],
        [
          "-e",
          "-e#Portuguese"
        ],
        [
          "-a",
          "-a#Portuguese"
        ]
      ],
      "raw_glosses": [
        "(chiefly proscribed) gender-neutral replacement for masculine -o or -e and feminine -a"
      ],
      "synonyms": [
        {
          "word": "-x"
        },
        {
          "word": "-e"
        }
      ],
      "tags": [
        "proscribed"
      ]
    }
  ],
  "word": "@"
}