"clavada relativa" meaning in Spanish

{
  "forms": [
    {
      "form": "clavadas relativas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "clavada relativa f (plural clavadas relativas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "Chess",
          "orig": "es:Chess",
          "parents": [
            "Board games",
            "Tabletop games",
            "Games",
            "Recreation",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "relative pin"
      ],
      "id": "en-clavada_relativa-es-noun-wLepZYyw",
      "links": [
        [
          "chess",
          "chess"
        ],
        [
          "relative pin",
          "relative pin"
        ]
      ],
      "raw_glosses": [
        "(chess) relative pin"
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "board-games",
        "chess",
        "games"
      ]
    }
  ],
  "word": "clavada relativa"
}

{
  "forms": [
    {
      "form": "clavadas relativas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "clavada relativa f (plural clavadas relativas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish multiword terms",
        "Spanish nouns",
        "es:Chess"
      ],
      "glosses": [
        "relative pin"
      ],
      "links": [
        [
          "chess",
          "chess"
        ],
        [
          "relative pin",
          "relative pin"
        ]
      ],
      "raw_glosses": [
        "(chess) relative pin"
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "board-games",
        "chess",
        "games"
      ]
    }
  ],
  "word": "clavada relativa"
}