"salt cake" meaning in All languages combined

{
  "forms": [
    {
      "form": "salt cakes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "salt cake (countable and uncountable, plural salt cakes)",
      "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"
        }
      ],
      "glosses": [
        "Impure solid sodium sulfate, produced in 19th-20th cc. by pouring sulfuric acid on table salt and formerly used in production of glasses, soaps etc."
      ],
      "id": "en-salt_cake-en-noun-gvQy6AII",
      "links": [
        [
          "sodium sulfate",
          "sodium sulfate"
        ],
        [
          "sulfuric acid",
          "sulfuric acid"
        ],
        [
          "table salt",
          "table salt"
        ]
      ],
      "raw_glosses": [
        "(historical) Impure solid sodium sulfate, produced in 19th-20th cc. by pouring sulfuric acid on table salt and formerly used in production of glasses, soaps etc."
      ],
      "tags": [
        "countable",
        "historical",
        "uncountable"
      ]
    }
  ],
  "word": "salt cake"
}

{
  "forms": [
    {
      "form": "salt cakes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "salt cake (countable and uncountable, plural salt cakes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "English uncountable nouns"
      ],
      "glosses": [
        "Impure solid sodium sulfate, produced in 19th-20th cc. by pouring sulfuric acid on table salt and formerly used in production of glasses, soaps etc."
      ],
      "links": [
        [
          "sodium sulfate",
          "sodium sulfate"
        ],
        [
          "sulfuric acid",
          "sulfuric acid"
        ],
        [
          "table salt",
          "table salt"
        ]
      ],
      "raw_glosses": [
        "(historical) Impure solid sodium sulfate, produced in 19th-20th cc. by pouring sulfuric acid on table salt and formerly used in production of glasses, soaps etc."
      ],
      "tags": [
        "countable",
        "historical",
        "uncountable"
      ]
    }
  ],
  "word": "salt cake"
}