"drying oil" meaning in English

{
  "forms": [
    {
      "form": "drying oils",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
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      "expansion": "drying oil (countable and uncountable, plural drying oils)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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      ],
      "examples": [
        {
          "text": "Drying oils are used as the bases of many paints and varnishes.",
          "type": "example"
        }
      ],
      "glosses": [
        "An oil that hardens to a tough, solid film after a period of exposure to air."
      ],
      "id": "en-drying_oil-en-noun-Knebw1gH",
      "links": [
        [
          "oil",
          "oil"
        ],
        [
          "harden",
          "harden"
        ],
        [
          "film",
          "film"
        ],
        [
          "exposure",
          "exposure"
        ],
        [
          "air",
          "air"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "drying oil"
      ]
    }
  ],
  "word": "drying oil"
}

{
  "forms": [
    {
      "form": "drying oils",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "drying oil (countable and uncountable, plural drying oils)",
      "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",
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        "English uncountable nouns",
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      ],
      "examples": [
        {
          "text": "Drying oils are used as the bases of many paints and varnishes.",
          "type": "example"
        }
      ],
      "glosses": [
        "An oil that hardens to a tough, solid film after a period of exposure to air."
      ],
      "links": [
        [
          "oil",
          "oil"
        ],
        [
          "harden",
          "harden"
        ],
        [
          "film",
          "film"
        ],
        [
          "exposure",
          "exposure"
        ],
        [
          "air",
          "air"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "drying oil"
      ]
    }
  ],
  "word": "drying oil"
}