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What is a full cylinder?

• uptown 7y ago
  A metaphor from an internal-combustion engine; a cylinder is said to be firing when the fuel inside it is ignited. https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/firing-all-four-cylinders https://www.encyclopedia.com/humanities/dictionaries-thesaur...
  • ojbyrne 7y ago
    The idiom (as noted on your link) is firing on all cylinders, not full cylinders.
• deleted 7y ago
  [deleted]