cylinder

cylinder

/ˈsɪlɪndə(r)/

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

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

Word Origin

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