"a tragos" meaning in Spanish

{
  "head_templates": [
    {
      "args": {},
      "expansion": "a tragos",
      "name": "es-adv"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "to learn bit by bit",
          "text": "aprender a tragos",
          "type": "example"
        },
        {
          "english": "(please add an English translation of this quotation)",
          "ref": "17th century, Francisco Antonio de Fuentes y Guzmán, Recordación Florida, Adiciones y Aclaraciones III",
          "text": "Hace á tragos su papel",
          "type": "quotation"
        }
      ],
      "glosses": [
        "bit by bit; gradually"
      ],
      "id": "en-a_tragos-es-adv-CW5cO2Yw",
      "links": [
        [
          "bit by bit",
          "bit by bit"
        ],
        [
          "gradually",
          "gradually"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) bit by bit; gradually"
      ],
      "synonyms": [
        {
          "word": "por partes"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "a tragos"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "a tragos",
      "name": "es-adv"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Requests for translations of Spanish quotations",
        "Spanish adverbs",
        "Spanish entries with incorrect language header",
        "Spanish idioms",
        "Spanish lemmas",
        "Spanish multiword terms",
        "Spanish terms with quotations",
        "Spanish terms with usage examples"
      ],
      "examples": [
        {
          "english": "to learn bit by bit",
          "text": "aprender a tragos",
          "type": "example"
        },
        {
          "english": "(please add an English translation of this quotation)",
          "ref": "17th century, Francisco Antonio de Fuentes y Guzmán, Recordación Florida, Adiciones y Aclaraciones III",
          "text": "Hace á tragos su papel",
          "type": "quotation"
        }
      ],
      "glosses": [
        "bit by bit; gradually"
      ],
      "links": [
        [
          "bit by bit",
          "bit by bit"
        ],
        [
          "gradually",
          "gradually"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) bit by bit; gradually"
      ],
      "synonyms": [
        {
          "word": "por partes"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "a tragos"
}