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English definition of “cylinder”

cylinder

noun [C] (ENGINE PART)   /ˈsɪl·ən·dər/
the tube-shaped part of an engine inside of which the piston (= part that causes the fuel to produce power) moves up and down: The engine isn’t firing on all its cylinders.
(Definition of cylinder noun (ENGINE PART) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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