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cylinder

1 ENTRIES FOUND:
cylinder /ˈsɪləndɚ/ noun
plural cylinders
cylinder
/ˈsɪləndɚ/
noun
plural cylinders
Britannica Dictionary definition of CYLINDER
[count]
: a shape that has straight sides and two circular ends see picture at geometry
: something that is shaped like a cylinder: such as
: a tube in which a piston of an engine moves see picture at engine
: the part of a gun that turns and that holds the bullets

on all cylinders

informal
: with the greatest possible amount of effort, power, or speed : at full capacity or speed