Meaning of CYLINDER in English

CYLINDER

/ ˈsɪlɪndə(r); NAmE / noun

1.

a solid or hollow figure with round ends and long straight sides

2.

an object shaped like a cylinder, especially one used as a container :

a gas / oxygen cylinder

3.

the hollow tube in an engine, shaped like a cylinder, inside which the piston moves :

a six-cylinder engine

IDIOMS

- working / firing on all cylinders

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WORD ORIGIN

late 16th cent.: from Latin cylindrus , from Greek kulindros roller, from kulindein to roll.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.