"cross-index" meaning in English

{
  "forms": [
    {
      "form": "cross-indexes",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "cross-indexing",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "cross-indexed",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "cross-indexed",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cross-index (third-person singular simple present cross-indexes, present participle cross-indexing, simple past and past participle cross-indexed)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "My record collection is sorted alphabetically by song title, but I've also cross-indexed it by artist."
        }
      ],
      "glosses": [
        "To index under a secondary heading or keyword, so that an item may be looked up or located in an alternative way."
      ],
      "id": "en-cross-index-en-verb-V2EZiN9O",
      "links": [
        [
          "index",
          "index"
        ]
      ],
      "raw_glosses": [
        "(transitive) To index under a secondary heading or keyword, so that an item may be looked up or located in an alternative way."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "cross-index"
}

{
  "forms": [
    {
      "form": "cross-indexes",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "cross-indexing",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "cross-indexed",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "cross-indexed",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cross-index (third-person singular simple present cross-indexes, present participle cross-indexing, simple past and past participle cross-indexed)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English transitive verbs",
        "English verbs"
      ],
      "examples": [
        {
          "text": "My record collection is sorted alphabetically by song title, but I've also cross-indexed it by artist."
        }
      ],
      "glosses": [
        "To index under a secondary heading or keyword, so that an item may be looked up or located in an alternative way."
      ],
      "links": [
        [
          "index",
          "index"
        ]
      ],
      "raw_glosses": [
        "(transitive) To index under a secondary heading or keyword, so that an item may be looked up or located in an alternative way."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "cross-index"
}