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Definition of cylinder noun from the Oxford Advanced Learner's Dictionary

cylinder

noun
 
/ˈsɪlɪndə(r)/
 
/ˈsɪlɪndər/
Idioms
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  1. a solid or hollow figure with round ends and long straight sidesTopics Colours and Shapesc1
  2. an object like a cylinder in shape, especially one used as a container
    • a gas/oxygen cylinder
    • All our aircraft carry at least one oxygen cylinder for emergency use on board.
  3. the hollow tube in an engine, like a cylinder in shape, inside which the piston moves
    • a six-cylinder engine
  4. Word Originlate 16th cent.: from Latin cylindrus, from Greek kulindros ‘roller’, from kulindein ‘to roll’.
Idioms
working/firing on all cylinders
  1. (informal) using all your energy to do something; working as well as possible
See cylinder in the Oxford Advanced American DictionarySee cylinder in the Oxford Learner's Dictionary of Academic English
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