"lubricating oil" meaning in English

{
  "forms": [
    {
      "form": "lubricating oils",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "lubricating oil (plural lubricating oils)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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              114,
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          "ref": "1955 October, “Main-Line Diesel-Electric Locomotives for Ireland”, in Railway Magazine, page 718:",
          "text": "Safety devices ensure that the engines are automatically shut down in the event of overspeed, low pressure in the lubricating oil system, low cooling-water pressure, or high cooling-water temperature.",
          "type": "quote"
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              211
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          "ref": "1960 June, “Talking of Trains: New B.R. research laboratory”, in Trains Illustrated, page 329:",
          "text": "Diesel maintenance schedules are benefiting from work done on the magnificent Hilger & Watts electronic spectrograph for oil analysis, which detects minute quantities of metals in samples of used lubricating oil; [...].",
          "type": "quote"
        }
      ],
      "glosses": [
        "An oil for lubrication of engines and other components."
      ],
      "id": "en-lubricating_oil-en-noun-1snUwbaF",
      "links": [
        [
          "lubrication",
          "lubrication"
        ],
        [
          "engine",
          "engine"
        ],
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          "component",
          "component"
        ]
      ]
    }
  ],
  "word": "lubricating oil"
}

{
  "forms": [
    {
      "form": "lubricating oils",
      "tags": [
        "plural"
      ]
    }
  ],
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    {
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      "expansion": "lubricating oil (plural lubricating oils)",
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  "lang_code": "en",
  "pos": "noun",
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        {
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            [
              114,
              129
            ]
          ],
          "ref": "1955 October, “Main-Line Diesel-Electric Locomotives for Ireland”, in Railway Magazine, page 718:",
          "text": "Safety devices ensure that the engines are automatically shut down in the event of overspeed, low pressure in the lubricating oil system, low cooling-water pressure, or high cooling-water temperature.",
          "type": "quote"
        },
        {
          "bold_text_offsets": [
            [
              196,
              211
            ]
          ],
          "ref": "1960 June, “Talking of Trains: New B.R. research laboratory”, in Trains Illustrated, page 329:",
          "text": "Diesel maintenance schedules are benefiting from work done on the magnificent Hilger & Watts electronic spectrograph for oil analysis, which detects minute quantities of metals in samples of used lubricating oil; [...].",
          "type": "quote"
        }
      ],
      "glosses": [
        "An oil for lubrication of engines and other components."
      ],
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          "lubrication",
          "lubrication"
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          "engine",
          "engine"
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        ]
      ]
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  ],
  "word": "lubricating oil"
}