"de gorra" meaning in Spanish

{
  "etymology_text": "From the custom at the University of Salamanca in the 16th century of rich students paying poor students for various tasks; the poor students were also invited to eat for free at banquets, where they stood out from the rich students by wearing simple caps (gorras).",
  "head_templates": [
    {
      "args": {},
      "expansion": "de gorra",
      "name": "es-adv"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "gorrear"
        },
        {
          "word": "gorrón"
        }
      ],
      "glosses": [
        "on someone's dime, at the expense of someone else"
      ],
      "id": "en-de_gorra-es-adv-Ob~-bXVA",
      "links": [
        [
          "on someone's dime",
          "on someone's dime"
        ],
        [
          "at the expense of",
          "at the expense of"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) on someone's dime, at the expense of someone else"
      ],
      "tags": [
        "idiomatic"
      ],
      "wikipedia": [
        "University of Salamanca"
      ]
    }
  ],
  "word": "de gorra"
}

{
  "derived": [
    {
      "word": "gorrear"
    },
    {
      "word": "gorrón"
    }
  ],
  "etymology_text": "From the custom at the University of Salamanca in the 16th century of rich students paying poor students for various tasks; the poor students were also invited to eat for free at banquets, where they stood out from the rich students by wearing simple caps (gorras).",
  "head_templates": [
    {
      "args": {},
      "expansion": "de gorra",
      "name": "es-adv"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Spanish adverbs",
        "Spanish entries with incorrect language header",
        "Spanish idioms",
        "Spanish lemmas",
        "Spanish multiword terms"
      ],
      "glosses": [
        "on someone's dime, at the expense of someone else"
      ],
      "links": [
        [
          "on someone's dime",
          "on someone's dime"
        ],
        [
          "at the expense of",
          "at the expense of"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) on someone's dime, at the expense of someone else"
      ],
      "tags": [
        "idiomatic"
      ],
      "wikipedia": [
        "University of Salamanca"
      ]
    }
  ],
  "word": "de gorra"
}