"BCB" meaning in Spanish

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "proper noun"
      },
      "expansion": "BCB",
      "name": "head"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Bloque Central Bolívar"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of Bloque Central Bolívar."
      ],
      "id": "en-BCB-es-name-IjfdNsx1",
      "links": [
        [
          "Bloque Central Bolívar",
          "w:Bloque Central Bolívar"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "BCB"
}

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "proper noun"
      },
      "expansion": "BCB",
      "name": "head"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Bloque Central Bolívar"
        }
      ],
      "categories": [
        "Spanish entries with incorrect language header",
        "Spanish initialisms",
        "Spanish lemmas",
        "Spanish links with redundant alt parameters",
        "Spanish links with redundant wikilinks",
        "Spanish palindromes",
        "Spanish proper nouns"
      ],
      "glosses": [
        "Initialism of Bloque Central Bolívar."
      ],
      "links": [
        [
          "Bloque Central Bolívar",
          "w:Bloque Central Bolívar"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "BCB"
}