"interstacking" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "inter",
        "3": "stacking"
      },
      "expansion": "inter- + stacking",
      "name": "prefix"
    }
  ],
  "etymology_text": "inter- + stacking",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "interstacking (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with inter-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "1958, Milk Industry Foundation (U.S.), Convention Proceedings\n...manufacturers of milk bottle cases have adopted the standards contained in the Simplified Practice Recommendation so that little, if any, difficulty is encountered in the interstacking of cases made by the different manufacturers."
        }
      ],
      "glosses": [
        "Stacking together."
      ],
      "id": "en-interstacking-en-noun-X3ru7Z7O",
      "related": [
        {
          "word": "interstack"
        },
        {
          "word": "interstacked"
        }
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "interstacking"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "inter",
        "3": "stacking"
      },
      "expansion": "inter- + stacking",
      "name": "prefix"
    }
  ],
  "etymology_text": "inter- + stacking",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "interstacking (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "interstack"
    },
    {
      "word": "interstacked"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with inter-",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "text": "1958, Milk Industry Foundation (U.S.), Convention Proceedings\n...manufacturers of milk bottle cases have adopted the standards contained in the Simplified Practice Recommendation so that little, if any, difficulty is encountered in the interstacking of cases made by the different manufacturers."
        }
      ],
      "glosses": [
        "Stacking together."
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "interstacking"
}